19758672442 has 16 divisors (see below), whose sum is σ = 30315917952. Its totient is φ = 9654023680.

The previous prime is 19758672407. The next prime is 19758672463. The reversal of 19758672442 is 24427685791.

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, 103708 + ... + 224215.

It is an arithmetic number, because the mean of its divisors is an integer number (1894744872).

Almost surely, 2^19758672442 is an apocalyptic number.

19758672442 is a deficient number, since it is larger than the sum of its proper divisors (10557245510).

19758672442 is a wasteful number, since it uses less digits than its factorization.

19758672442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328613.

The product of its digits is 6773760, while the sum is 55.

The spelling of 19758672442 in words is "nineteen billion, seven hundred fifty-eight million, six hundred seventy-two thousand, four hundred forty-two".