19421532000 has 1152 divisors, whose sum is σ = 81135250560. Its totient is φ = 4528742400.

The previous prime is 19421531977. The next prime is 19421532007. The reversal of 19421532000 is 23512491.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19421532007) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 366443974 + ... + 366444026.

It is an arithmetic number, because the mean of its divisors is an integer number (70429905).

Almost surely, 2^19421532000 is an apocalyptic number.

19421532000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19421532000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40567625280).

19421532000 is an abundant number, since it is smaller than the sum of its proper divisors (61713718560).

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

19421532000 is a wasteful number, since it uses less digits than its factorization.

19421532000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 19421532000 in words is "nineteen billion, four hundred twenty-one million, five hundred thirty-two thousand".