19249398050 has 24 divisors (see below), whose sum is σ = 37360573056. Its totient is φ = 7364986640.

The previous prime is 19249398031. The next prime is 19249398109. The reversal of 19249398050 is 5089394291.

It is a happy number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 19249398050.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8368154 + ... + 8370453.

It is an arithmetic number, because the mean of its divisors is an integer number (1556690544).

Almost surely, 2^19249398050 is an apocalyptic number.

19249398050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19249398050 is a deficient number, since it is larger than the sum of its proper divisors (18111175006).

19249398050 is a wasteful number, since it uses less digits than its factorization.

19249398050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16738642 (or 16738637 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 19249398050 in words is "nineteen billion, two hundred forty-nine million, three hundred ninety-eight thousand, fifty".