1157181030 has 24 divisors (see below), whose sum is σ = 3008670912. Its totient is φ = 308581584.

The previous prime is 1157181023. The next prime is 1157181059. The reversal of 1157181030 is 301817511.

1157181030 is a `hidden beast` number, since 11 + 571 + 81 + 0 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1157180985 and 1157181003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6428694 + ... + 6428873.

It is an arithmetic number, because the mean of its divisors is an integer number (125361288).

Almost surely, 2^1157181030 is an apocalyptic number.

1157181030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1157181030 is an abundant number, since it is smaller than the sum of its proper divisors (1851489882).

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

1157181030 is a wasteful number, since it uses less digits than its factorization.

1157181030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12857580 (or 12857577 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 1157181030 is about 34017.3636544633. The cubic root of 1157181030 is about 1049.8657515438.

Adding to 1157181030 its reverse (301817511), we get a palindrome (1458998541).

The spelling of 1157181030 in words is "one billion, one hundred fifty-seven million, one hundred eighty-one thousand, thirty".