1168598538 has 24 divisors (see below), whose sum is σ = 2532593700. Its totient is φ = 389435904.

The previous prime is 1168598489. The next prime is 1168598539. The reversal of 1168598538 is 8358958611.

1168598538 is a `hidden beast` number, since 1 + 16 + 8 + 5 + 98 + 538 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1167793929 + 804609 = 34173^2 + 897^2 .

It is not an unprimeable number, because it can be changed into a prime (1168598539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130468 + ... + 139136.

Almost surely, 2^1168598538 is an apocalyptic number.

1168598538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1168598538 is an abundant number, since it is smaller than the sum of its proper divisors (1363995162).

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

1168598538 is a wasteful number, since it uses less digits than its factorization.

1168598538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16166 (or 16163 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

The square root of 1168598538 is about 34184.7705564920. The cubic root of 1168598538 is about 1053.3073455596.

The spelling of 1168598538 in words is "one billion, one hundred sixty-eight million, five hundred ninety-eight thousand, five hundred thirty-eight".