1939940715 has 16 divisors (see below), whose sum is σ = 3162470688. Its totient is φ = 1015113216.

The previous prime is 1939940711. The next prime is 1939940749. The reversal of 1939940715 is 5170499391.

It is not a de Polignac number, because 1939940715 - 2² = 1939940711 is a prime.

It is a super-2 number, since 2×1939940715² = 7526739955429422450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1939940711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219294 + ... + 1220883.

It is an arithmetic number, because the mean of its divisors is an integer number (197654418).

Almost surely, 2^1939940715 is an apocalyptic number.

1939940715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1939940715 is a deficient number, since it is larger than the sum of its proper divisors (1222529973).

1939940715 is a wasteful number, since it uses less digits than its factorization.

1939940715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440238.

The product of its (nonzero) digits is 306180, while the sum is 48.

The square root of 1939940715 is about 44044.7580876544. The cubic root of 1939940715 is about 1247.1809999032.

The spelling of 1939940715 in words is "one billion, nine hundred thirty-nine million, nine hundred forty thousand, seven hundred fifteen".