1083991902 has 32 divisors (see below), whose sum is σ = 2535320832. Its totient is φ = 302508864.

The previous prime is 1083991897. The next prime is 1083991903. The reversal of 1083991902 is 2091993801.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083991903) 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, 298303 + ... + 301914.

It is an arithmetic number, because the mean of its divisors is an integer number (79228776).

Almost surely, 2^1083991902 is an apocalyptic number.

1083991902 is an abundant number, since it is smaller than the sum of its proper divisors (1451328930).

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

1083991902 is a wasteful number, since it uses less digits than its factorization.

1083991902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600272.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 1083991902 is about 32924.0322864621. The cubic root of 1083991902 is about 1027.2480982763.

The spelling of 1083991902 in words is "one billion, eighty-three million, nine hundred ninety-one thousand, nine hundred two".