19530030456 has 24 divisors (see below), whose sum is σ = 52893832680. Its totient is φ = 6510010128.

The previous prime is 19530030449. The next prime is 19530030467. The reversal of 19530030456 is 65403003591.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×19530030456² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19530030456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135625140 + ... + 135625283.

It is an arithmetic number, because the mean of its divisors is an integer number (2203909695).

Almost surely, 2^19530030456 is an apocalyptic number.

It is an amenable number.

19530030456 is an abundant number, since it is smaller than the sum of its proper divisors (33363802224).

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

19530030456 is a wasteful number, since it uses less digits than its factorization.

19530030456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271250435 (or 271250428 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 19530030456 in words is "nineteen billion, five hundred thirty million, thirty thousand, four hundred fifty-six".