19394660734 has 8 divisors (see below), whose sum is σ = 29094303888. Its totient is φ = 9696559440.

The previous prime is 19394660707. The next prime is 19394660741. The reversal of 19394660734 is 43706649391.

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

It is a super-2 number, since 2×19394660734² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 353487 + ... + 404650.

It is an arithmetic number, because the mean of its divisors is an integer number (3636787986).

Almost surely, 2^19394660734 is an apocalyptic number.

19394660734 is a deficient number, since it is larger than the sum of its proper divisors (9699643154).

19394660734 is a wasteful number, since it uses less digits than its factorization.

19394660734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770930.

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 19394660734 in words is "nineteen billion, three hundred ninety-four million, six hundred sixty thousand, seven hundred thirty-four".