1082520891 has 12 divisors (see below), whose sum is σ = 1564154280. Its totient is φ = 721443840.

The previous prime is 1082520863. The next prime is 1082520911. The reversal of 1082520891 is 1980252801.

It is not a de Polignac number, because 1082520891 - 2⁹ = 1082520379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1082520811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11896 + ... + 48026.

It is an arithmetic number, because the mean of its divisors is an integer number (130346190).

Almost surely, 2^1082520891 is an apocalyptic number.

1082520891 is a deficient number, since it is larger than the sum of its proper divisors (481633389).

1082520891 is a wasteful number, since it uses less digits than its factorization.

1082520891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39466 (or 39463 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1082520891 is about 32901.6852303951. The cubic root of 1082520891 is about 1026.7832186344.

The spelling of 1082520891 in words is "one billion, eighty-two million, five hundred twenty thousand, eight hundred ninety-one".