1690264339920 has 160 divisors (see below), whose sum is σ = 6269869536000. Its totient is φ = 416065061376.

The previous prime is 1690264339901. The next prime is 1690264339949. The reversal of 1690264339920 is 299334620961.

1690264339920 is a `hidden beast` number, since 16 + 90 + 2 + 6 + 433 + 99 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30069220 + ... + 30125379.

It is an arithmetic number, because the mean of its divisors is an integer number (39186684600).

Almost surely, 2^{1690264339920} is an apocalyptic number.

1690264339920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1690264339920 is an abundant number, since it is smaller than the sum of its proper divisors (4579605196080).

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

1690264339920 is a wasteful number, since it uses less digits than its factorization.

1690264339920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60194634 (or 60194622 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The spelling of 1690264339920 in words is "one trillion, six hundred ninety billion, two hundred sixty-four million, three hundred thirty-nine thousand, nine hundred twenty".