1089158836 has 48 divisors (see below), whose sum is σ = 2059803648. Its totient is φ = 502444800.

The previous prime is 1089158827. The next prime is 1089158849. The reversal of 1089158836 is 6388519801.

It is a self number, because there is not a number n which added to its sum of digits gives 1089158836.

It is a congruent number.

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, 1485526 + ... + 1486258.

It is an arithmetic number, because the mean of its divisors is an integer number (42912576).

Almost surely, 2^1089158836 is an apocalyptic number.

It is an amenable number.

1089158836 is a deficient number, since it is larger than the sum of its proper divisors (970644812).

1089158836 is a wasteful number, since it uses less digits than its factorization.

1089158836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 1089158836 is about 33002.4065183132. The cubic root of 1089158836 is about 1028.8776652341.

The spelling of 1089158836 in words is "one billion, eighty-nine million, one hundred fifty-eight thousand, eight hundred thirty-six".