1939861934 has 4 divisors (see below), whose sum is σ = 2909792904. Its totient is φ = 969930966.

The previous prime is 1939861907. The next prime is 1939861951. The reversal of 1939861934 is 4391689391.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4391689391 = 23 ⋅190943017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484965482 + ... + 484965485.

It is an arithmetic number, because the mean of its divisors is an integer number (727448226).

Almost surely, 2^1939861934 is an apocalyptic number.

1939861934 is a deficient number, since it is larger than the sum of its proper divisors (969930970).

1939861934 is an equidigital number, since it uses as much as digits as its factorization.

1939861934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969930969.

The product of its digits is 1259712, while the sum is 53.

The square root of 1939861934 is about 44043.8637496757. The cubic root of 1939861934 is about 1247.1641169995.

The spelling of 1939861934 in words is "one billion, nine hundred thirty-nine million, eight hundred sixty-one thousand, nine hundred thirty-four".