1978482272831 has 16 divisors (see below), whose sum is σ = 2092444935168. Its totient is φ = 1867668062400.

The previous prime is 1978482272807. The next prime is 1978482272849. The reversal of 1978482272831 is 1382722848791.

It is a cyclic number.

It is not a de Polignac number, because 1978482272831 - 2³⁴ = 1961302403647 is a prime.

It is a super-2 number, since 2×1978482272831² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1978482272731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8202356 + ... + 8440118.

It is an arithmetic number, because the mean of its divisors is an integer number (130777808448).

Almost surely, 2^{1978482272831} is an apocalyptic number.

1978482272831 is a deficient number, since it is larger than the sum of its proper divisors (113962662337).

1978482272831 is a wasteful number, since it uses less digits than its factorization.

1978482272831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244382.

The product of its digits is 21676032, while the sum is 62.

The spelling of 1978482272831 in words is "one trillion, nine hundred seventy-eight billion, four hundred eighty-two million, two hundred seventy-two thousand, eight hundred thirty-one".