1622257494 has 32 divisors (see below), whose sum is σ = 3811739904. Its totient is φ = 453778080.

The previous prime is 1622257471. The next prime is 1622257513. The reversal of 1622257494 is 4947522261.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944514 + ... + 946229.

It is an arithmetic number, because the mean of its divisors is an integer number (119116872).

Almost surely, 2^1622257494 is an apocalyptic number.

1622257494 is an abundant number, since it is smaller than the sum of its proper divisors (2189482410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1622257494 is a wasteful number, since it uses less digits than its factorization.

1622257494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890772.

The product of its digits is 241920, while the sum is 42.

The square root of 1622257494 is about 40277.2577765667. The cubic root of 1622257494 is about 1175.0055817450.

The spelling of 1622257494 in words is "one billion, six hundred twenty-two million, two hundred fifty-seven thousand, four hundred ninety-four".