19098450400 has 72 divisors (see below), whose sum is σ = 49078030680. Its totient is φ = 7237301760.

The previous prime is 19098450379. The next prime is 19098450401. The reversal of 19098450400 is 405489091.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19098450401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613039 + ... + 643438.

It is an arithmetic number, because the mean of its divisors is an integer number (681639315).

Almost surely, 2^19098450400 is an apocalyptic number.

19098450400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19098450400 is an abundant number, since it is smaller than the sum of its proper divisors (29979580280).

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

19098450400 is a wasteful number, since it uses less digits than its factorization.

19098450400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256516 (or 1256503 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 19098450400 in words is "nineteen billion, ninety-eight million, four hundred fifty thousand, four hundred".