19025284128 has 48 divisors (see below), whose sum is σ = 50031172800. Its totient is φ = 6330358016.

The previous prime is 19025284097. The next prime is 19025284129. The reversal of 19025284128 is 82148252091.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×19025284128² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19025284128.

It is not an unprimeable number, because it can be changed into a prime (19025284129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124428 + ... + 231371.

It is an arithmetic number, because the mean of its divisors is an integer number (1042316100).

Almost surely, 2^19025284128 is an apocalyptic number.

It is an amenable number.

19025284128 is an abundant number, since it is smaller than the sum of its proper divisors (31005888672).

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

19025284128 is a wasteful number, since it uses less digits than its factorization.

19025284128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356369 (or 356361 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 19025284128 in words is "nineteen billion, twenty-five million, two hundred eighty-four thousand, one hundred twenty-eight".