1690164079 has 4 divisors (see below), whose sum is σ = 1690260480. Its totient is φ = 1690067680.

The previous prime is 1690164029. The next prime is 1690164103. The reversal of 1690164079 is 9704610961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1690164079 - 2⁹ = 1690163567 is a prime.

It is a super-2 number, since 2×1690164079² = 5713309227883836482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690164029) 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, 13642 + ... + 59719.

It is an arithmetic number, because the mean of its divisors is an integer number (422565120).

Almost surely, 2^1690164079 is an apocalyptic number.

1690164079 is a deficient number, since it is larger than the sum of its proper divisors (96401).

1690164079 is an equidigital number, since it uses as much as digits as its factorization.

1690164079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96400.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1690164079 is about 41111.6051620464. The cubic root of 1690164079 is about 1191.1769724306.

The spelling of 1690164079 in words is "one billion, six hundred ninety million, one hundred sixty-four thousand, seventy-nine".