902645089090 has 32 divisors (see below), whose sum is σ = 1644503180400. Its totient is φ = 356686848000.

The previous prime is 902645089069. The next prime is 902645089147. The reversal of 902645089090 is 90980546209.

It can be written as a sum of positive squares in 8 ways, for example, as 650389022089 + 252256067001 = 806467^2 + 502251^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541731 + ... + 1448710.

Almost surely, 2^902645089090 is an apocalyptic number.

902645089090 is a deficient number, since it is larger than the sum of its proper divisors (741858091310).

902645089090 is a wasteful number, since it uses less digits than its factorization.

902645089090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990998.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 902645089090 in words is "nine hundred two billion, six hundred forty-five million, eighty-nine thousand, ninety".