1939456085 has 16 divisors (see below), whose sum is σ = 2672441472. Its totient is φ = 1323604800.

The previous prime is 1939456039. The next prime is 1939456097. The reversal of 1939456085 is 5806549391.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1939456085 is a prime.

It is a super-2 number, since 2×1939456085² = 7522979811287054450, which contains 22 as substring.

It is a Duffinian 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, 123926 + ... + 138695.

It is an arithmetic number, because the mean of its divisors is an integer number (167027592).

Almost surely, 2^1939456085 is an apocalyptic number.

It is an amenable number.

1939456085 is a deficient number, since it is larger than the sum of its proper divisors (732985387).

1939456085 is a wasteful number, since it uses less digits than its factorization.

1939456085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262844.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 1939456085 is about 44039.2561812754. The cubic root of 1939456085 is about 1247.0771356181.

The spelling of 1939456085 in words is "one billion, nine hundred thirty-nine million, four hundred fifty-six thousand, eighty-five".