1164997188 has 48 divisors (see below), whose sum is σ = 3025431360. Its totient is φ = 387680832.

The previous prime is 1164997157. The next prime is 1164997189. The reversal of 1164997188 is 8817994611.

1164997188 is a `hidden beast` number, since 1 + 1 + 6 + 499 + 71 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1164997189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57895 + ... + 75377.

It is an arithmetic number, because the mean of its divisors is an integer number (63029820).

Almost surely, 2^1164997188 is an apocalyptic number.

1164997188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1164997188 is an abundant number, since it is smaller than the sum of its proper divisors (1860434172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1164997188 is a wasteful number, since it uses less digits than its factorization.

1164997188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18113 (or 18105 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The square root of 1164997188 is about 34132.0551388281. The cubic root of 1164997188 is about 1052.2242157277.

The spelling of 1164997188 in words is "one billion, one hundred sixty-four million, nine hundred ninety-seven thousand, one hundred eighty-eight".