1044265820 has 24 divisors (see below), whose sum is σ = 2361647904. Its totient is φ = 385574976.

The previous prime is 1044265813. The next prime is 1044265847. The reversal of 1044265820 is 285624401.

It is a super-2 number, since 2×1044265820² = 2180982205640544800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007944 + ... + 2008463.

It is an arithmetic number, because the mean of its divisors is an integer number (98401996).

Almost surely, 2^1044265820 is an apocalyptic number.

1044265820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044265820 is an abundant number, since it is smaller than the sum of its proper divisors (1317382084).

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

1044265820 is a wasteful number, since it uses less digits than its factorization.

1044265820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016429 (or 4016427 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 1044265820 is about 32315.1020422341. The cubic root of 1044265820 is about 1014.5427563468.

The spelling of 1044265820 in words is "one billion, forty-four million, two hundred sixty-five thousand, eight hundred twenty".