1939341666 has 32 divisors (see below), whose sum is σ = 4143778560. Its totient is φ = 603280656.

The previous prime is 1939341653. The next prime is 1939341713. The reversal of 1939341666 is 6661439391.

It is a super-2 number, since 2×1939341666² = 7522092194967311112, which contains 22 as substring.

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, 119316 + ... + 134591.

It is an arithmetic number, because the mean of its divisors is an integer number (129493080).

Almost surely, 2^1939341666 is an apocalyptic number.

1939341666 is an abundant number, since it is smaller than the sum of its proper divisors (2204436894).

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

1939341666 is a wasteful number, since it uses less digits than its factorization.

1939341666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253998.

The product of its digits is 629856, while the sum is 48.

The square root of 1939341666 is about 44037.9571052064. The cubic root of 1939341666 is about 1247.0526111950.

The spelling of 1939341666 in words is "one billion, nine hundred thirty-nine million, three hundred forty-one thousand, six hundred sixty-six".