1089090432 has 48 divisors (see below), whose sum is σ = 3133974480. Its totient is φ = 363029760.

The previous prime is 1089090413. The next prime is 1089090451. The reversal of 1089090432 is 2340909801.

It is an interprime number because it is at equal distance from previous prime (1089090413) and next prime (1089090451).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1089090432² = 2372235938147893248, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 471544 + ... + 473847.

It is an arithmetic number, because the mean of its divisors is an integer number (65291135).

Almost surely, 2^1089090432 is an apocalyptic number.

1089090432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1089090432 is an abundant number, since it is smaller than the sum of its proper divisors (2044884048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089090432 is an equidigital number, since it uses as much as digits as its factorization.

1089090432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945411 (or 945396 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1089090432 is about 33001.3701533739. The cubic root of 1089090432 is about 1028.8561254247.

The spelling of 1089090432 in words is "one billion, eighty-nine million, ninety thousand, four hundred thirty-two".