1144891558 has 16 divisors (see below), whose sum is σ = 1742122800. Its totient is φ = 564195456.

The previous prime is 1144891549. The next prime is 1144891577. The reversal of 1144891558 is 8551984411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345393 + ... + 348691.

It is an arithmetic number, because the mean of its divisors is an integer number (108882675).

Almost surely, 2^1144891558 is an apocalyptic number.

1144891558 is a deficient number, since it is larger than the sum of its proper divisors (597231242).

1144891558 is a wasteful number, since it uses less digits than its factorization.

1144891558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751.

The product of its digits is 230400, while the sum is 46.

The square root of 1144891558 is about 33836.2462161511. The cubic root of 1144891558 is about 1046.1359283105.

The spelling of 1144891558 in words is "one billion, one hundred forty-four million, eight hundred ninety-one thousand, five hundred fifty-eight".