1690930068 has 12 divisors (see below), whose sum is σ = 3945503520. Its totient is φ = 563643352.

The previous prime is 1690930001. The next prime is 1690930069. The reversal of 1690930068 is 8600390961.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690930069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70455408 + ... + 70455431.

It is an arithmetic number, because the mean of its divisors is an integer number (328791960).

Almost surely, 2^1690930068 is an apocalyptic number.

It is an amenable number.

1690930068 is an abundant number, since it is smaller than the sum of its proper divisors (2254573452).

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

1690930068 is a wasteful number, since it uses less digits than its factorization.

1690930068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140910846 (or 140910844 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 1690930068 is about 41120.9200772551. The cubic root of 1690930068 is about 1191.3568939473.

The spelling of 1690930068 in words is "one billion, six hundred ninety million, nine hundred thirty thousand, sixty-eight".