1157481900 has 432 divisors, whose sum is σ = 4170566400. Its totient is φ = 277136640.

The previous prime is 1157481889. The next prime is 1157481911. The reversal of 1157481900 is 91847511.

1157481900 is a `hidden beast` number, since 1 + 1 + 574 + 81 + 9 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1157481889) and next prime (1157481911).

It is a super-2 number, since 2×1157481900² = 2679528697655220000, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10619046 + ... + 10619154.

Almost surely, 2^1157481900 is an apocalyptic number.

1157481900 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 1157481900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085283200).

1157481900 is an abundant number, since it is smaller than the sum of its proper divisors (3013084500).

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

1157481900 is a wasteful number, since it uses less digits than its factorization.

1157481900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 1157481900 is about 34021.7856674220. The cubic root of 1157481900 is about 1049.9567329110.

The spelling of 1157481900 in words is "one billion, one hundred fifty-seven million, four hundred eighty-one thousand, nine hundred".