1157849955 has 12 divisors (see below), whose sum is σ = 2006940000. Its totient is φ = 617519952.

The previous prime is 1157849947. The next prime is 1157849989. The reversal of 1157849955 is 5599487511.

It is a happy number.

1157849955 is a `hidden beast` number, since 11 + 578 + 4 + 9 + 9 + 55 = 666.

It is not a de Polignac number, because 1157849955 - 2³ = 1157849947 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12864955 + ... + 12865044.

It is an arithmetic number, because the mean of its divisors is an integer number (167245000).

Almost surely, 2^1157849955 is an apocalyptic number.

1157849955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1157849955 is a deficient number, since it is larger than the sum of its proper divisors (849090045).

1157849955 is a wasteful number, since it uses less digits than its factorization.

1157849955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25730010 (or 25730007 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 54.

The square root of 1157849955 is about 34027.1943451117. The cubic root of 1157849955 is about 1050.0680092003.

The spelling of 1157849955 in words is "one billion, one hundred fifty-seven million, eight hundred forty-nine thousand, nine hundred fifty-five".