1157632642 has 8 divisors (see below), whose sum is σ = 1811946816. Its totient is φ = 553650372.

The previous prime is 1157632639. The next prime is 1157632657. The reversal of 1157632642 is 2462367511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1157632642² = 2680226667647800328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12582918 + ... + 12583009.

It is an arithmetic number, because the mean of its divisors is an integer number (226493352).

Almost surely, 2^1157632642 is an apocalyptic number.

1157632642 is a deficient number, since it is larger than the sum of its proper divisors (654314174).

1157632642 is a wasteful number, since it uses less digits than its factorization.

1157632642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25165952.

The product of its digits is 60480, while the sum is 37.

The square root of 1157632642 is about 34024.0009699036. Note that the first 3 decimals coincide. The cubic root of 1157632642 is about 1050.0023105013.

The spelling of 1157632642 in words is "one billion, one hundred fifty-seven million, six hundred thirty-two thousand, six hundred forty-two".