3936972351942 has 96 divisors (see below), whose sum is σ = 10174330363392. Its totient is φ = 1075754414592.

The previous prime is 3936972351931. The next prime is 3936972351947. The reversal of 3936972351942 is 2491532796393.

3936972351942 is a `hidden beast` number, since 3 + 9 + 3 + 6 + 9 + 72 + 3 + 519 + 42 = 666.

It is a super-2 number, since 2×3936972351942² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 3936972351942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3936972351947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16857613 + ... + 17089559.

It is an arithmetic number, because the mean of its divisors is an integer number (105982607952).

Almost surely, 2^{3936972351942} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3936972351942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5087165181696).

3936972351942 is an abundant number, since it is smaller than the sum of its proper divisors (6237358011450).

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

3936972351942 is a wasteful number, since it uses less digits than its factorization.

3936972351942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237842 (or 237839 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 63.

The spelling of 3936972351942 in words is "three trillion, nine hundred thirty-six billion, nine hundred seventy-two million, three hundred fifty-one thousand, nine hundred forty-two".