19418237028 has 24 divisors (see below), whose sum is σ = 50343577760. Its totient is φ = 6472745640.

The previous prime is 19418237023. The next prime is 19418237039. The reversal of 19418237028 is 82073281491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19418237023) 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, 89899138 + ... + 89899353.

Almost surely, 2^19418237028 is an apocalyptic number.

19418237028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19418237028 is an abundant number, since it is smaller than the sum of its proper divisors (30925340732).

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

19418237028 is a wasteful number, since it uses less digits than its factorization.

19418237028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179798504 (or 179798496 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 19418237028 in words is "nineteen billion, four hundred eighteen million, two hundred thirty-seven thousand, twenty-eight".