1690990168 has 16 divisors (see below), whose sum is σ = 3623550480. Its totient is φ = 724710048.

The previous prime is 1690990157. The next prime is 1690990207. The reversal of 1690990168 is 8610990961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15098071 + ... + 15098182.

It is an arithmetic number, because the mean of its divisors is an integer number (226471905).

Almost surely, 2^1690990168 is an apocalyptic number.

It is an amenable number.

1690990168 is an abundant number, since it is smaller than the sum of its proper divisors (1932560312).

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

1690990168 is a wasteful number, since it uses less digits than its factorization.

1690990168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30196266 (or 30196262 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 1690990168 is about 41121.6508423482. The cubic root of 1690990168 is about 1191.3710084086.

The spelling of 1690990168 in words is "one billion, six hundred ninety million, nine hundred ninety thousand, one hundred sixty-eight".