1690097992 has 24 divisors (see below), whose sum is σ = 3483210150. Its totient is φ = 768225920.

The previous prime is 1690097963. The next prime is 1690097999. The reversal of 1690097992 is 2997900961.

It can be written as a sum of positive squares in only one way, i.e., 1212850276 + 477247716 = 34826^2 + 21846^2 .

It is not an unprimeable number, because it can be changed into a prime (1690097999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 872017 + ... + 873952.

Almost surely, 2^1690097992 is an apocalyptic number.

It is an amenable number.

1690097992 is an abundant number, since it is smaller than the sum of its proper divisors (1793112158).

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

1690097992 is a wasteful number, since it uses less digits than its factorization.

1690097992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745997 (or 1745982 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 52.

The square root of 1690097992 is about 41110.8014030376. The cubic root of 1690097992 is about 1191.1614468494.

The spelling of 1690097992 in words is "one billion, six hundred ninety million, ninety-seven thousand, nine hundred ninety-two".