2172813626 has 16 divisors (see below), whose sum is σ = 3272413824. Its totient is φ = 1082018784.

The previous prime is 2172813541. The next prime is 2172813637. The reversal of 2172813626 is 6263182712.

It is a happy number.

It is a super-2 number, since 2×2172813626² = 9442238106662535752, 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 2172813626.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569441 + ... + 573243.

It is an arithmetic number, because the mean of its divisors is an integer number (204525864).

Almost surely, 2^2172813626 is an apocalyptic number.

2172813626 is a deficient number, since it is larger than the sum of its proper divisors (1099600198).

2172813626 is a wasteful number, since it uses less digits than its factorization.

2172813626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885.

The product of its digits is 48384, while the sum is 38.

The square root of 2172813626 is about 46613.4489820266. The cubic root of 2172813626 is about 1295.2118983618.

The spelling of 2172813626 in words is "two billion, one hundred seventy-two million, eight hundred thirteen thousand, six hundred twenty-six".