1163243994 has 32 divisors (see below), whose sum is σ = 2542933440. Its totient is φ = 351811200.

The previous prime is 1163243987. The next prime is 1163244001. The reversal of 1163243994 is 4993423611.

It is an interprime number because it is at equal distance from previous prime (1163243987) and next prime (1163244001).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17472 + ... + 51300.

It is an arithmetic number, because the mean of its divisors is an integer number (79466670).

Almost surely, 2^1163243994 is an apocalyptic number.

1163243994 is an abundant number, since it is smaller than the sum of its proper divisors (1379689446).

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

1163243994 is a wasteful number, since it uses less digits than its factorization.

1163243994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34366.

The product of its digits is 139968, while the sum is 42.

The square root of 1163243994 is about 34106.3629547332. The cubic root of 1163243994 is about 1051.6961230824.

The spelling of 1163243994 in words is "one billion, one hundred sixty-three million, two hundred forty-three thousand, nine hundred ninety-four".