2179622890 has 32 divisors (see below), whose sum is σ = 4061670480. Its totient is φ = 841150464.

The previous prime is 2179622833. The next prime is 2179622917. The reversal of 2179622890 is 982269712.

It can be written as a sum of positive squares in 8 ways, for example, as 39727809 + 2139895081 = 6303^2 + 46259^2 .

It is a super-2 number, since 2×2179622890² = 9501511885223904200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2179622890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610992 + ... + 614548.

Almost surely, 2^2179622890 is an apocalyptic number.

2179622890 is a deficient number, since it is larger than the sum of its proper divisors (1882047590).

2179622890 is a wasteful number, since it uses less digits than its factorization.

2179622890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5706.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 2179622890 is about 46686.4315406522. The cubic root of 2179622890 is about 1296.5634858043.

The spelling of 2179622890 in words is "two billion, one hundred seventy-nine million, six hundred twenty-two thousand, eight hundred ninety".