1161442500 has 120 divisors (see below), whose sum is σ = 3534218688. Its totient is φ = 296208000.

The previous prime is 1161442493. The next prime is 1161442517. The reversal of 1161442500 is 52441611.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 169134 + ... + 175866.

Almost surely, 2^1161442500 is an apocalyptic number.

1161442500 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 1161442500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767109344).

1161442500 is an abundant number, since it is smaller than the sum of its proper divisors (2372776188).

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

1161442500 is a wasteful number, since it uses less digits than its factorization.

1161442500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6783 (or 6766 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1161442500 is about 34079.9427816421. The cubic root of 1161442500 is about 1051.1529286010.

The spelling of 1161442500 in words is "one billion, one hundred sixty-one million, four hundred forty-two thousand, five hundred".