19452788628 has 384 divisors, whose sum is σ = 61502128128. Its totient is φ = 4640219136.

The previous prime is 19452788617. The next prime is 19452788629. The reversal of 19452788628 is 82688725491.

It is a super-2 number, since 2×19452788628² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19452788629) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 87232125 + ... + 87232347.

It is an arithmetic number, because the mean of its divisors is an integer number (160161792).

Almost surely, 2^19452788628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19452788628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30751064064).

19452788628 is an abundant number, since it is smaller than the sum of its proper divisors (42049339500).

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

19452788628 is a wasteful number, since it uses less digits than its factorization.

19452788628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 429 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 60.

The spelling of 19452788628 in words is "nineteen billion, four hundred fifty-two million, seven hundred eighty-eight thousand, six hundred twenty-eight".