1974395939882 has 16 divisors (see below), whose sum is σ = 3090681031680. Its totient is φ = 944177878512.

The previous prime is 1974395939881. The next prime is 1974395939921. The reversal of 1974395939882 is 2889395934791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1974395939881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1790282 + ... + 2674677.

It is an arithmetic number, because the mean of its divisors is an integer number (193167564480).

Almost surely, 2^{1974395939882} is an apocalyptic number.

1974395939882 is a deficient number, since it is larger than the sum of its proper divisors (1116285091798).

1974395939882 is a wasteful number, since it uses less digits than its factorization.

1974395939882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4474597.

The product of its digits is 1058158080, while the sum is 77.

The spelling of 1974395939882 in words is "one trillion, nine hundred seventy-four billion, three hundred ninety-five million, nine hundred thirty-nine thousand, eight hundred eighty-two".