320638416194 has 4 divisors (see below), whose sum is σ = 480957624294. Its totient is φ = 160319208096.

The previous prime is 320638416181. The next prime is 320638416209. The reversal of 320638416194 is 491614836023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 491614836023 = 1453 ⋅338344691.

It can be written as a sum of positive squares in only one way, i.e., 193322899225 + 127315516969 = 439685^2 + 356813^2 .

It is a super-2 number, since 2×320638416194² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80159604047 + ... + 80159604050.

Almost surely, 2^320638416194 is an apocalyptic number.

320638416194 is a deficient number, since it is larger than the sum of its proper divisors (160319208100).

320638416194 is a wasteful number, since it uses less digits than its factorization.

320638416194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160319208099.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 320638416194 in words is "three hundred twenty billion, six hundred thirty-eight million, four hundred sixteen thousand, one hundred ninety-four".