1145664158 has 8 divisors (see below), whose sum is σ = 1722598920. Its totient is φ = 571464520.

The previous prime is 1145664137. The next prime is 1145664181. The reversal of 1145664158 is 8514665411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682733 + ... + 684408.

It is an arithmetic number, because the mean of its divisors is an integer number (215324865).

Almost surely, 2^1145664158 is an apocalyptic number.

1145664158 is a deficient number, since it is larger than the sum of its proper divisors (576934762).

1145664158 is a wasteful number, since it uses less digits than its factorization.

1145664158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367562.

The product of its digits is 115200, while the sum is 41.

The square root of 1145664158 is about 33847.6610417914. The cubic root of 1145664158 is about 1046.3711945164.

The spelling of 1145664158 in words is "one billion, one hundred forty-five million, six hundred sixty-four thousand, one hundred fifty-eight".