2163990170 has 8 divisors (see below), whose sum is σ = 3895182324. Its totient is φ = 865596064.

The previous prime is 2163990133. The next prime is 2163990221. The reversal of 2163990170 is 710993612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2150455129 + 13535041 = 46373^2 + 3679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108199499 + ... + 108199518.

Almost surely, 2^2163990170 is an apocalyptic number.

2163990170 is a deficient number, since it is larger than the sum of its proper divisors (1731192154).

2163990170 is a wasteful number, since it uses less digits than its factorization.

2163990170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216399024.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 2163990170 is about 46518.7077421547. The cubic root of 2163990170 is about 1293.4563022242.

The spelling of 2163990170 in words is "two billion, one hundred sixty-three million, nine hundred ninety thousand, one hundred seventy".