1622664147 has 18 divisors (see below), whose sum is σ = 2344091652. Its totient is φ = 998004384.

The previous prime is 1622664139. The next prime is 1622664149. The reversal of 1622664147 is 7414662261.

It is not a de Polignac number, because 1622664147 - 2³ = 1622664139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1622664149) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 906129 + ... + 907917.

It is an arithmetic number, because the mean of its divisors is an integer number (130227314).

Almost surely, 2^1622664147 is an apocalyptic number.

1622664147 is a deficient number, since it is larger than the sum of its proper divisors (721427505).

1622664147 is an frugal number, since it uses more digits than its factorization.

1622664147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607 (or 1805 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 1622664147 is about 40282.3056316294. The cubic root of 1622664147 is about 1175.1037535061.

The spelling of 1622664147 in words is "one billion, six hundred twenty-two million, six hundred sixty-four thousand, one hundred forty-seven".