1157664111 has 8 divisors (see below), whose sum is σ = 1554819504. Its totient is φ = 766142400.

The previous prime is 1157664089. The next prime is 1157664127. The reversal of 1157664111 is 1114667511.

It is a happy number.

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

It is not a de Polignac number, because 1157664111 - 2⁶ = 1157664047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157664811) 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 7 ways as a sum of consecutive naturals, for example, 1407940 + ... + 1408761.

It is an arithmetic number, because the mean of its divisors is an integer number (194352438).

Almost surely, 2^1157664111 is an apocalyptic number.

1157664111 is a deficient number, since it is larger than the sum of its proper divisors (397155393).

1157664111 is a wasteful number, since it uses less digits than its factorization.

1157664111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816841.

The product of its digits is 5040, while the sum is 33.

The square root of 1157664111 is about 34024.4634197220. The cubic root of 1157664111 is about 1050.0118248101.

The spelling of 1157664111 in words is "one billion, one hundred fifty-seven million, six hundred sixty-four thousand, one hundred eleven".