1980394137392 has 40 divisors (see below), whose sum is σ = 4185996646032. Its totient is φ = 900143974400.

The previous prime is 1980394137383. The next prime is 1980394137401. The reversal of 1980394137392 is 2937314930891.

It is an interprime number because it is at equal distance from previous prime (1980394137383) and next prime (1980394137401).

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, 4595228 + ... + 5007684.

Almost surely, 2^{1980394137392} is an apocalyptic number.

It is an amenable number.

1980394137392 is an abundant number, since it is smaller than the sum of its proper divisors (2205602508640).

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

1980394137392 is a wasteful number, since it uses less digits than its factorization.

1980394137392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439757 (or 439751 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 1980394137392 in words is "one trillion, nine hundred eighty billion, three hundred ninety-four million, one hundred thirty-seven thousand, three hundred ninety-two".