19926352530 has 48 divisors (see below), whose sum is σ = 59209735104. Its totient is φ = 4554594720.

The previous prime is 19926352517. The next prime is 19926352531. The reversal of 19926352530 is 3525362991.

19926352530 is a `hidden beast` number, since 1 + 9 + 9 + 2 + 63 + 52 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19926352531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15813936 + ... + 15815195.

It is an arithmetic number, because the mean of its divisors is an integer number (1233536148).

Almost surely, 2^19926352530 is an apocalyptic number.

19926352530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19926352530 is an abundant number, since it is smaller than the sum of its proper divisors (39283382574).

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

19926352530 is a wasteful number, since it uses less digits than its factorization.

19926352530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31629151 (or 31629148 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The spelling of 19926352530 in words is "nineteen billion, nine hundred twenty-six million, three hundred fifty-two thousand, five hundred thirty".