1157882820 has 48 divisors (see below), whose sum is σ = 3243589440. Its totient is φ = 308624256.

The previous prime is 1157882809. The next prime is 1157882821. The reversal of 1157882820 is 282887511.

It is not an unprimeable number, because it can be changed into a prime (1157882821) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 205359 + ... + 210921.

It is an arithmetic number, because the mean of its divisors is an integer number (67574780).

Almost surely, 2^1157882820 is an apocalyptic number.

1157882820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157882820 is an abundant number, since it is smaller than the sum of its proper divisors (2085706620).

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

1157882820 is a wasteful number, since it uses less digits than its factorization.

1157882820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9044 (or 9042 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 1157882820 is about 34027.6772642506. The cubic root of 1157882820 is about 1050.0779443272.

The spelling of 1157882820 in words is "one billion, one hundred fifty-seven million, eight hundred eighty-two thousand, eight hundred twenty".