1972376646 has 8 divisors (see below), whose sum is σ = 3944753304. Its totient is φ = 657458880.

The previous prime is 1972376639. The next prime is 1972376657. The reversal of 1972376646 is 6466732791.

It is a sphenic number, since it is the product of 3 distinct primes.

1972376646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164364715 + ... + 164364726.

It is an arithmetic number, because the mean of its divisors is an integer number (493094163).

Almost surely, 2^1972376646 is an apocalyptic number.

1972376646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1972376646 is a wasteful number, since it uses less digits than its factorization.

1972376646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328729446.

The product of its digits is 2286144, while the sum is 51.

The square root of 1972376646 is about 44411.4472405482. The cubic root of 1972376646 is about 1254.0935971489.

It can be divided in two parts, 19723 and 76646, that added together give a palindrome (96369).

The spelling of 1972376646 in words is "one billion, nine hundred seventy-two million, three hundred seventy-six thousand, six hundred forty-six".