19419749394 has 32 divisors (see below), whose sum is σ = 39416133120. Its totient is φ = 6377743872.

The previous prime is 19419749389. The next prime is 19419749411. The reversal of 19419749394 is 49394791491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54972 + ... + 204600.

It is an arithmetic number, because the mean of its divisors is an integer number (1231754160).

Almost surely, 2^19419749394 is an apocalyptic number.

19419749394 is an abundant number, since it is smaller than the sum of its proper divisors (19996383726).

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

19419749394 is a wasteful number, since it uses less digits than its factorization.

19419749394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149954.

The product of its digits is 8817984, while the sum is 60.

The spelling of 19419749394 in words is "nineteen billion, four hundred nineteen million, seven hundred forty-nine thousand, three hundred ninety-four".