1161683138 has 32 divisors (see below), whose sum is σ = 2178085248. Its totient is φ = 451440000.

The previous prime is 1161683137. The next prime is 1161683167. The reversal of 1161683138 is 8313861611.

It is a super-2 number, since 2×1161683138² = 2699015426227054088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1161683137) 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, 51638 + ... + 70638.

It is an arithmetic number, because the mean of its divisors is an integer number (68065164).

Almost surely, 2^1161683138 is an apocalyptic number.

1161683138 is a deficient number, since it is larger than the sum of its proper divisors (1016402110).

1161683138 is a wasteful number, since it uses less digits than its factorization.

1161683138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19418.

The product of its digits is 20736, while the sum is 38.

The square root of 1161683138 is about 34083.4730918080. The cubic root of 1161683138 is about 1051.2255193294.

The spelling of 1161683138 in words is "one billion, one hundred sixty-one million, six hundred eighty-three thousand, one hundred thirty-eight".