1622144645 has 16 divisors (see below), whose sum is σ = 2127632832. Its totient is φ = 1177464960.

The previous prime is 1622144617. The next prime is 1622144663. The reversal of 1622144645 is 5464412261.

It is not a de Polignac number, because 1622144645 - 2⁸ = 1622144389 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 569 + ... + 56961.

It is an arithmetic number, because the mean of its divisors is an integer number (132977052).

Almost surely, 2^1622144645 is an apocalyptic number.

It is an amenable number.

1622144645 is a deficient number, since it is larger than the sum of its proper divisors (505488187).

1622144645 is a wasteful number, since it uses less digits than its factorization.

1622144645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56932.

The product of its digits is 46080, while the sum is 35.

The square root of 1622144645 is about 40275.8568499790. The cubic root of 1622144645 is about 1174.9783354992.

The spelling of 1622144645 in words is "one billion, six hundred twenty-two million, one hundred forty-four thousand, six hundred forty-five".