1178968538 has 16 divisors (see below), whose sum is σ = 1937728224. Its totient is φ = 533531760.

The previous prime is 1178968537. The next prime is 1178968543. The reversal of 1178968538 is 8358698711.

It is not an unprimeable number, because it can be changed into a prime (1178968537) 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, 113045 + ... + 123032.

It is an arithmetic number, because the mean of its divisors is an integer number (121108014).

Almost surely, 2^1178968538 is an apocalyptic number.

1178968538 is a deficient number, since it is larger than the sum of its proper divisors (758759686).

1178968538 is a wasteful number, since it uses less digits than its factorization.

1178968538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236317.

The product of its digits is 2903040, while the sum is 56.

The square root of 1178968538 is about 34336.1112824385. Note that the first 3 decimals coincide. The cubic root of 1178968538 is about 1056.4138148268.

The spelling of 1178968538 in words is "one billion, one hundred seventy-eight million, nine hundred sixty-eight thousand, five hundred thirty-eight".