1690804944 has 60 divisors (see below), whose sum is σ = 4742444356. Its totient is φ = 562346496.

The previous prime is 1690804933. The next prime is 1690804961. The reversal of 1690804944 is 4494080961.

It can be written as a sum of positive squares in 2 ways, for example, as 1483790400 + 207014544 = 38520^2 + 14388^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1690804944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52962 + ... + 78654.

Almost surely, 2^1690804944 is an apocalyptic number.

It is an amenable number.

1690804944 is an abundant number, since it is smaller than the sum of its proper divisors (3051639412).

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

1690804944 is a wasteful number, since it uses less digits than its factorization.

1690804944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26164 (or 26155 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1690804944 is about 41119.3986337349. The cubic root of 1690804944 is about 1191.3275075522.

The spelling of 1690804944 in words is "one billion, six hundred ninety million, eight hundred four thousand, nine hundred forty-four".