1638094322 has 6 divisors (see below), whose sum is σ = 2457227343. Its totient is φ = 819018542.

The previous prime is 1638094301. The next prime is 1638094363. The reversal of 1638094322 is 2234908361.

It can be written as a sum of positive squares in only one way, i.e., 819047161 + 819047161 = 28619^2 + 28619^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=28619.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42929 + ... + 71547.

Almost surely, 2^1638094322 is an apocalyptic number.

1638094322 is a deficient number, since it is larger than the sum of its proper divisors (819133021).

1638094322 is an frugal number, since it uses more digits than its factorization.

1638094322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57240 (or 28621 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1638094322 is about 40473.3779415556. The cubic root of 1638094322 is about 1178.8167594203.

The spelling of 1638094322 in words is "one billion, six hundred thirty-eight million, ninety-four thousand, three hundred twenty-two".