1158546240 has 336 divisors, whose sum is σ = 4233745152. Its totient is φ = 301418496.

The previous prime is 1158546211. The next prime is 1158546247. The reversal of 1158546240 is 426458511.

It is a happy number.

1158546240 is a `hidden beast` number, since 1 + 158 + 5 + 462 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1158546195 and 1158546204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158546247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3654562 + ... + 3654878.

It is an arithmetic number, because the mean of its divisors is an integer number (12600432).

Almost surely, 2^1158546240 is an apocalyptic number.

1158546240 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 1158546240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116872576).

1158546240 is an abundant number, since it is smaller than the sum of its proper divisors (3075198912).

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

1158546240 is an equidigital number, since it uses as much as digits as its factorization.

1158546240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 1158546240 is about 34037.4241093535. The cubic root of 1158546240 is about 1050.2784567598.

The spelling of 1158546240 in words is "one billion, one hundred fifty-eight million, five hundred forty-six thousand, two hundred forty".