19976380372 has 12 divisors (see below), whose sum is σ = 37647793876. Its totient is φ = 9219867840.

The previous prime is 19976380339. The next prime is 19976380373. The reversal of 19976380372 is 27308367991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13408250436 + 6568129936 = 115794^2 + 81044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19976380373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192080529 + ... + 192080632.

Almost surely, 2^19976380372 is an apocalyptic number.

It is an amenable number.

19976380372 is a deficient number, since it is larger than the sum of its proper divisors (17671413504).

19976380372 is a wasteful number, since it uses less digits than its factorization.

19976380372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384161178 (or 384161176 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 19976380372 in words is "nineteen billion, nine hundred seventy-six million, three hundred eighty thousand, three hundred seventy-two".