1979457737394 has 32 divisors (see below), whose sum is σ = 3979458460800. Its totient is φ = 656396497152.

The previous prime is 1979457737297. The next prime is 1979457737399. The reversal of 1979457737394 is 4937377549791.

It is a super-2 number, since 2×1979457737394² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1979457737399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7362682 + ... + 7626794.

It is an arithmetic number, because the mean of its divisors is an integer number (124358076900).

Almost surely, 2^{1979457737394} is an apocalyptic number.

1979457737394 is an abundant number, since it is smaller than the sum of its proper divisors (2000000723406).

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

1979457737394 is a wasteful number, since it uses less digits than its factorization.

1979457737394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270594.

The product of its digits is 1260236880, while the sum is 75.

The spelling of 1979457737394 in words is "one trillion, nine hundred seventy-nine billion, four hundred fifty-seven million, seven hundred thirty-seven thousand, three hundred ninety-four".