1939951641782 has 64 divisors (see below), whose sum is σ = 3717858009600. Its totient is φ = 737110867200.

The previous prime is 1939951641781. The next prime is 1939951641787. The reversal of 1939951641782 is 2871461599391.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939951641781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16984568 + ... + 17098404.

It is an arithmetic number, because the mean of its divisors is an integer number (58091531400).

Almost surely, 2^{1939951641782} is an apocalyptic number.

1939951641782 is a deficient number, since it is larger than the sum of its proper divisors (1777906367818).

1939951641782 is a wasteful number, since it uses less digits than its factorization.

1939951641782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116597.

The product of its digits is 29393280, while the sum is 65.

The spelling of 1939951641782 in words is "one trillion, nine hundred thirty-nine billion, nine hundred fifty-one million, six hundred forty-one thousand, seven hundred eighty-two".