1157788916 has 6 divisors (see below), whose sum is σ = 2026130610. Its totient is φ = 578894456.

The previous prime is 1157788909. The next prime is 1157788949. The reversal of 1157788916 is 6198877511.

It can be written as a sum of positive squares in only one way, i.e., 811680100 + 346108816 = 28490^2 + 18604^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 144723611 + ... + 144723618.

It is an arithmetic number, because the mean of its divisors is an integer number (337688435).

Almost surely, 2^1157788916 is an apocalyptic number.

It is an amenable number.

1157788916 is a deficient number, since it is larger than the sum of its proper divisors (868341694).

1157788916 is a wasteful number, since it uses less digits than its factorization.

1157788916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289447233 (or 289447231 counting only the distinct ones).

The product of its digits is 846720, while the sum is 53.

The square root of 1157788916 is about 34026.2974183204. The cubic root of 1157788916 is about 1050.0495565424.

The spelling of 1157788916 in words is "one billion, one hundred fifty-seven million, seven hundred eighty-eight thousand, nine hundred sixteen".