19749064754 has 8 divisors (see below), whose sum is σ = 29646547248. Its totient is φ = 9866882340.

The previous prime is 19749064703. The next prime is 19749064771. The reversal of 19749064754 is 45746094791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19749064754.

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 3 ways as a sum of consecutive naturals, for example, 3821792 + ... + 3826955.

It is an arithmetic number, because the mean of its divisors is an integer number (3705818406).

Almost surely, 2^19749064754 is an apocalyptic number.

19749064754 is a deficient number, since it is larger than the sum of its proper divisors (9897482494).

19749064754 is a wasteful number, since it uses less digits than its factorization.

19749064754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650040.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 19749064754 in words is "nineteen billion, seven hundred forty-nine million, sixty-four thousand, seven hundred fifty-four".