19992979482 has 128 divisors (see below), whose sum is σ = 50472960000. Its totient is φ = 5150822400.

The previous prime is 19992979469. The next prime is 19992979483. The reversal of 19992979482 is 28497929991.

It is not an unprimeable number, because it can be changed into a prime (19992979483) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1502394 + ... + 1515642.

It is an arithmetic number, because the mean of its divisors is an integer number (394320000).

Almost surely, 2^19992979482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19992979482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25236480000).

19992979482 is an abundant number, since it is smaller than the sum of its proper divisors (30479980518).

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

19992979482 is a wasteful number, since it uses less digits than its factorization.

19992979482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13372.

The product of its digits is 52907904, while the sum is 69.

The spelling of 19992979482 in words is "nineteen billion, nine hundred ninety-two million, nine hundred seventy-nine thousand, four hundred eighty-two".