19772880738 has 32 divisors (see below), whose sum is σ = 43187582592. Its totient is φ = 5998272000.

The previous prime is 19772880737. The next prime is 19772880739. The reversal of 19772880738 is 83708827791.

It is an interprime number because it is at equal distance from previous prime (19772880737) and next prime (19772880739).

It is not an unprimeable number, because it can be changed into a prime (19772880733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1779663 + ... + 1790738.

It is an arithmetic number, because the mean of its divisors is an integer number (1349611956).

Almost surely, 2^19772880738 is an apocalyptic number.

19772880738 is an abundant number, since it is smaller than the sum of its proper divisors (23414701854).

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

19772880738 is a wasteful number, since it uses less digits than its factorization.

19772880738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570490.

The product of its (nonzero) digits is 9483264, while the sum is 60.

The spelling of 19772880738 in words is "nineteen billion, seven hundred seventy-two million, eight hundred eighty thousand, seven hundred thirty-eight".