1161974240 has 192 divisors, whose sum is σ = 3309465600. Its totient is φ = 384975360.

The previous prime is 1161974221. The next prime is 1161974243. The reversal of 1161974240 is 424791611.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1161974240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161974243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1700939 + ... + 1701621.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^1161974240 is an apocalyptic number.

1161974240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161974240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1654732800).

1161974240 is an abundant number, since it is smaller than the sum of its proper divisors (2147491360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161974240 is an equidigital number, since it uses as much as digits as its factorization.

1161974240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1161974240 is about 34087.7432517907. The cubic root of 1161974240 is about 1051.3133196034.

The spelling of 1161974240 in words is "one billion, one hundred sixty-one million, nine hundred seventy-four thousand, two hundred forty".