1622449018 has 8 divisors (see below), whose sum is σ = 2433954420. Its totient is φ = 811130880.

The previous prime is 1622449013. The next prime is 1622449027. The reversal of 1622449018 is 8109442261.

It can be written as a sum of positive squares in 2 ways, for example, as 1594644489 + 27804529 = 39933^2 + 5273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1622449013) 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, 22663 + ... + 61306.

Almost surely, 2^1622449018 is an apocalyptic number.

1622449018 is a deficient number, since it is larger than the sum of its proper divisors (811505402).

1622449018 is an equidigital number, since it uses as much as digits as its factorization.

1622449018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93632.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1622449018 is about 40279.6352764024. The cubic root of 1622449018 is about 1175.0518203794.

The spelling of 1622449018 in words is "one billion, six hundred twenty-two million, four hundred forty-nine thousand, eighteen".