1939921194 has 8 divisors (see below), whose sum is σ = 3879842400. Its totient is φ = 646640396.

The previous prime is 1939921189. The next prime is 1939921201. The reversal of 1939921194 is 4911299391.

It is a happy number.

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

1939921194 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161660094 + ... + 161660105.

It is an arithmetic number, because the mean of its divisors is an integer number (484980300).

Almost surely, 2^1939921194 is an apocalyptic number.

1939921194 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1939921194 is a wasteful number, since it uses less digits than its factorization.

1939921194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323320204.

The product of its digits is 157464, while the sum is 48.

The square root of 1939921194 is about 44044.5364829737. The cubic root of 1939921194 is about 1247.1768165619.

The spelling of 1939921194 in words is "one billion, nine hundred thirty-nine million, nine hundred twenty-one thousand, one hundred ninety-four".