1622244651 has 4 divisors (see below), whose sum is σ = 2162992872. Its totient is φ = 1081496432.

The previous prime is 1622244641. The next prime is 1622244661. The reversal of 1622244651 is 1564422261.

1622244651 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1622244641) and next prime (1622244661).

It is a cyclic number.

It is not a de Polignac number, because 1622244651 - 2⁵ = 1622244619 is a prime.

It is a super-2 number, since 2×1622244651² = 5263355415396223602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1622244641) 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, 270374106 + ... + 270374111.

It is an arithmetic number, because the mean of its divisors is an integer number (540748218).

Almost surely, 2^1622244651 is an apocalyptic number.

1622244651 is a deficient number, since it is larger than the sum of its proper divisors (540748221).

1622244651 is an equidigital number, since it uses as much as digits as its factorization.

1622244651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540748220.

The product of its digits is 23040, while the sum is 33.

The square root of 1622244651 is about 40277.0983438480. The cubic root of 1622244651 is about 1175.0024809967.

The spelling of 1622244651 in words is "one billion, six hundred twenty-two million, two hundred forty-four thousand, six hundred fifty-one".