1089937231 has 16 divisors (see below), whose sum is σ = 1138500064. Its totient is φ = 1042481664.

The previous prime is 1089937193. The next prime is 1089937237. The reversal of 1089937231 is 1327399801.

It is a cyclic number.

It is not a de Polignac number, because 1089937231 - 2²⁷ = 955719503 is a prime.

It is a super-2 number, since 2×1089937231² = 2375926335039894722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089937237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233916 + ... + 1234798.

It is an arithmetic number, because the mean of its divisors is an integer number (71156254).

Almost surely, 2^1089937231 is an apocalyptic number.

1089937231 is a deficient number, since it is larger than the sum of its proper divisors (48562833).

1089937231 is an equidigital number, since it uses as much as digits as its factorization.

1089937231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1089937231 is about 33014.1974156574. The cubic root of 1089937231 is about 1029.1227113778.

The spelling of 1089937231 in words is "one billion, eighty-nine million, nine hundred thirty-seven thousand, two hundred thirty-one".