19249256494 has 24 divisors (see below), whose sum is σ = 31290233040. Its totient is φ = 8877331008.

The previous prime is 19249256491. The next prime is 19249256527. The reversal of 19249256494 is 49465294291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19249256491) 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, 424234 + ... + 467410.

It is an arithmetic number, because the mean of its divisors is an integer number (1303759710).

Almost surely, 2^19249256494 is an apocalyptic number.

19249256494 is a deficient number, since it is larger than the sum of its proper divisors (12040976546).

19249256494 is a wasteful number, since it uses less digits than its factorization.

19249256494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44524 (or 44511 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 55.

The spelling of 19249256494 in words is "nineteen billion, two hundred forty-nine million, two hundred fifty-six thousand, four hundred ninety-four".