1163991154 has 16 divisors (see below), whose sum is σ = 1823083200. Its totient is φ = 556672144.

The previous prime is 1163991151. The next prime is 1163991163. The reversal of 1163991154 is 4511993611.

It is not an unprimeable number, because it can be changed into a prime (1163991151) 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, 87574 + ... + 99985.

It is an arithmetic number, because the mean of its divisors is an integer number (113942700).

Almost surely, 2^1163991154 is an apocalyptic number.

1163991154 is a deficient number, since it is larger than the sum of its proper divisors (659092046).

1163991154 is a wasteful number, since it uses less digits than its factorization.

1163991154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187697.

The product of its digits is 29160, while the sum is 40.

The square root of 1163991154 is about 34117.3145777917. The cubic root of 1163991154 is about 1051.9212455562.

The spelling of 1163991154 in words is "one billion, one hundred sixty-three million, nine hundred ninety-one thousand, one hundred fifty-four".