1157755181 has 16 divisors (see below), whose sum is σ = 1289520000. Its totient is φ = 1030612800.

The previous prime is 1157755153. The next prime is 1157755187. The reversal of 1157755181 is 1815577511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157755181 is a prime.

It is a super-2 number, since 2×1157755181² = 2680794118264685522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157755187) 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, 111395 + ... + 121343.

It is an arithmetic number, because the mean of its divisors is an integer number (80595000).

Almost surely, 2^1157755181 is an apocalyptic number.

1157755181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1157755181 is a deficient number, since it is larger than the sum of its proper divisors (131764819).

1157755181 is a wasteful number, since it uses less digits than its factorization.

1157755181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10180.

The product of its digits is 49000, while the sum is 41.

The square root of 1157755181 is about 34025.8016951842. The cubic root of 1157755181 is about 1050.0393578595.

The spelling of 1157755181 in words is "one billion, one hundred fifty-seven million, seven hundred fifty-five thousand, one hundred eighty-one".