1163238918 has 16 divisors (see below), whose sum is σ = 2335749696. Its totient is φ = 386201000.

The previous prime is 1163238913. The next prime is 1163238929. The reversal of 1163238918 is 8198323611.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1163238918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163238913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384696 + ... + 387707.

It is an arithmetic number, because the mean of its divisors is an integer number (145984356).

Almost surely, 2^1163238918 is an apocalyptic number.

1163238918 is an abundant number, since it is smaller than the sum of its proper divisors (1172510778).

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

1163238918 is a wasteful number, since it uses less digits than its factorization.

1163238918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772659.

The product of its digits is 62208, while the sum is 42.

The square root of 1163238918 is about 34106.2885403850. The cubic root of 1163238918 is about 1051.6945933324.

The spelling of 1163238918 in words is "one billion, one hundred sixty-three million, two hundred thirty-eight thousand, nine hundred eighteen".