6999190164 has 18 divisors (see below), whose sum is σ = 17692397450. Its totient is φ = 2333063376.

The previous prime is 6999190129. The next prime is 6999190193. The reversal of 6999190164 is 4610919996.

It can be written as a sum of positive squares in only one way, i.e., 4670355600 + 2328834564 = 68340^2 + 48258^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 6999190164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97210939 + ... + 97211010.

Almost surely, 2^6999190164 is an apocalyptic number.

It is an amenable number.

6999190164 is an abundant number, since it is smaller than the sum of its proper divisors (10693207286).

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

6999190164 is a wasteful number, since it uses less digits than its factorization.

6999190164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194421959 (or 194421954 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 6999190164 is about 83661.1628176420. The cubic root of 6999190164 is about 1912.8574103780.

The spelling of 6999190164 in words is "six billion, nine hundred ninety-nine million, one hundred ninety thousand, one hundred sixty-four".