1690079730 has 32 divisors (see below), whose sum is σ = 4063984704. Its totient is φ = 449822016.

The previous prime is 1690079707. The next prime is 1690079749. The reversal of 1690079730 is 379700961.

1690079730 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38169 + ... + 69548.

It is an arithmetic number, because the mean of its divisors is an integer number (126999522).

Almost surely, 2^1690079730 is an apocalyptic number.

1690079730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1690079730 is an abundant number, since it is smaller than the sum of its proper divisors (2373904974).

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

1690079730 is a wasteful number, since it uses less digits than its factorization.

1690079730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108250.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 1690079730 is about 41110.5792953590. The cubic root of 1690079730 is about 1191.1571565521.

The spelling of 1690079730 in words is "one billion, six hundred ninety million, seventy-nine thousand, seven hundred thirty".