1690336252 has 24 divisors (see below), whose sum is σ = 3228088752. Its totient is φ = 768076800.

The previous prime is 1690336199. The next prime is 1690336279. The reversal of 1690336252 is 2526330961.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 201502 + ... + 209722.

It is an arithmetic number, because the mean of its divisors is an integer number (134503698).

Almost surely, 2^1690336252 is an apocalyptic number.

It is an amenable number.

1690336252 is a deficient number, since it is larger than the sum of its proper divisors (1537752500).

1690336252 is a wasteful number, since it uses less digits than its factorization.

1690336252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12909 (or 12907 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 1690336252 is about 41113.6990795039. The cubic root of 1690336252 is about 1191.2174185134.

The spelling of 1690336252 in words is "one billion, six hundred ninety million, three hundred thirty-six thousand, two hundred fifty-two".