1980336444942 has 16 divisors (see below), whose sum is σ = 3964026564432. Its totient is φ = 659553202560.

The previous prime is 1980336444907. The next prime is 1980336444943. The reversal of 1980336444942 is 2494446330891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980336444943) 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, 139728763 + ... + 139742934.

It is an arithmetic number, because the mean of its divisors is an integer number (247751660277).

Almost surely, 2^{1980336444942} is an apocalyptic number.

1980336444942 is an abundant number, since it is smaller than the sum of its proper divisors (1983690119490).

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

1980336444942 is a wasteful number, since it uses less digits than its factorization.

1980336444942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279472883.

The product of its (nonzero) digits is 17915904, while the sum is 57.

The spelling of 1980336444942 in words is "one trillion, nine hundred eighty billion, three hundred thirty-six million, four hundred forty-four thousand, nine hundred forty-two".