19203188949 has 24 divisors (see below), whose sum is σ = 31738828160. Its totient is φ = 10959984288.

The previous prime is 19203188929. The next prime is 19203188951. The reversal of 19203188949 is 94988130291.

It is not a de Polignac number, because 19203188949 - 2⁹ = 19203188437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19203188895 and 19203188904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19203188909) 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 23 ways as a sum of consecutive naturals, for example, 131617 + ... + 236070.

Almost surely, 2^19203188949 is an apocalyptic number.

It is an amenable number.

19203188949 is a deficient number, since it is larger than the sum of its proper divisors (12535639211).

19203188949 is a wasteful number, since it uses less digits than its factorization.

19203188949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368529 (or 368526 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 19203188949 in words is "nineteen billion, two hundred three million, one hundred eighty-eight thousand, nine hundred forty-nine".