1090509693 has 128 divisors (see below), whose sum is σ = 2032128000. Its totient is φ = 503304192.

The previous prime is 1090509689. The next prime is 1090509701. The reversal of 1090509693 is 3969050901.

It is not a de Polignac number, because 1090509693 - 2² = 1090509689 is a prime.

It is a super-2 number, since 2×1090509693² = 2378422781053908498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090509193) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7318783 + ... + 7318931.

It is an arithmetic number, because the mean of its divisors is an integer number (15876000).

Almost surely, 2^1090509693 is an apocalyptic number.

1090509693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1090509693 is a deficient number, since it is larger than the sum of its proper divisors (941618307).

1090509693 is a wasteful number, since it uses less digits than its factorization.

1090509693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 65610, while the sum is 42.

The square root of 1090509693 is about 33022.8662141856. The cubic root of 1090509693 is about 1029.3028534130.

The spelling of 1090509693 in words is "one billion, ninety million, five hundred nine thousand, six hundred ninety-three".