19149337894 has 16 divisors (see below), whose sum is σ = 28782621360. Its totient is φ = 9555147360.

The previous prime is 19149337819. The next prime is 19149337937. The reversal of 19149337894 is 49873394191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676512 + ... + 4680604.

It is an arithmetic number, because the mean of its divisors is an integer number (1798913835).

Almost surely, 2^19149337894 is an apocalyptic number.

19149337894 is a deficient number, since it is larger than the sum of its proper divisors (9633283466).

19149337894 is a wasteful number, since it uses less digits than its factorization.

19149337894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8295.

The product of its digits is 5878656, while the sum is 58.

The spelling of 19149337894 in words is "nineteen billion, one hundred forty-nine million, three hundred thirty-seven thousand, eight hundred ninety-four".