19193242428 has 36 divisors (see below), whose sum is σ = 48540070488. Its totient is φ = 6394606560.

The previous prime is 19193242421. The next prime is 19193242429. The reversal of 19193242428 is 82424239191.

19193242428 is a `hidden beast` number, since 19 + 193 + 2 + 424 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19193242421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55938 + ... + 203753.

Almost surely, 2^19193242428 is an apocalyptic number.

19193242428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19193242428 is an abundant number, since it is smaller than the sum of its proper divisors (29346828060).

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

19193242428 is a wasteful number, since it uses less digits than its factorization.

19193242428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261754 (or 261749 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The spelling of 19193242428 in words is "nineteen billion, one hundred ninety-three million, two hundred forty-two thousand, four hundred twenty-eight".