1690365920 has 48 divisors (see below), whose sum is σ = 4131207360. Its totient is φ = 652829184.

The previous prime is 1690365907. The next prime is 1690365977. The reversal of 1690365920 is 295630961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177512 + ... + 186791.

It is an arithmetic number, because the mean of its divisors is an integer number (86066820).

Almost surely, 2^1690365920 is an apocalyptic number.

1690365920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1690365920 is an abundant number, since it is smaller than the sum of its proper divisors (2440841440).

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

1690365920 is a wasteful number, since it uses less digits than its factorization.

1690365920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364347 (or 364339 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 1690365920 is about 41114.0598822349. The cubic root of 1690365920 is about 1191.2243877050.

The spelling of 1690365920 in words is "one billion, six hundred ninety million, three hundred sixty-five thousand, nine hundred twenty".