1326401982 has 48 divisors (see below), whose sum is σ = 3046988880. Its totient is φ = 415570176.

The previous prime is 1326401981. The next prime is 1326402013. The reversal of 1326401982 is 2891046231.

1326401982 is a `hidden beast` number, since 1 + 3 + 2 + 640 + 1 + 9 + 8 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326401981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267744 + ... + 272652.

It is an arithmetic number, because the mean of its divisors is an integer number (63478935).

Almost surely, 2^1326401982 is an apocalyptic number.

1326401982 is an abundant number, since it is smaller than the sum of its proper divisors (1720586898).

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

1326401982 is a wasteful number, since it uses less digits than its factorization.

1326401982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817 (or 5814 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1326401982 is about 36419.8020587702. The cubic root of 1326401982 is about 1098.7318669716.

The spelling of 1326401982 in words is "one billion, three hundred twenty-six million, four hundred one thousand, nine hundred eighty-two".