1391963934 has 16 divisors (see below), whose sum is σ = 2784630672. Its totient is φ = 463870848.

The previous prime is 1391963917. The next prime is 1391963957. The reversal of 1391963934 is 4393691931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509 + ... + 52784.

It is an arithmetic number, because the mean of its divisors is an integer number (174039417).

Almost surely, 2^1391963934 is an apocalyptic number.

1391963934 is an abundant number, since it is smaller than the sum of its proper divisors (1392666738).

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

1391963934 is a wasteful number, since it uses less digits than its factorization.

1391963934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58571.

The product of its digits is 472392, while the sum is 48.

The square root of 1391963934 is about 37309.0328740910. The cubic root of 1391963934 is about 1116.5443911359.

The spelling of 1391963934 in words is "one billion, three hundred ninety-one million, nine hundred sixty-three thousand, nine hundred thirty-four".