191718240748 has 12 divisors (see below), whose sum is σ = 335530494880. Its totient is φ = 95852385072.

The previous prime is 191718240697. The next prime is 191718240757. The reversal of 191718240748 is 847042817191.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 191718240695 and 191718240704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619508 + ... + 1733851.

Almost surely, 2^191718240748 is an apocalyptic number.

It is an amenable number.

191718240748 is a deficient number, since it is larger than the sum of its proper divisors (143812254132).

191718240748 is a wasteful number, since it uses less digits than its factorization.

191718240748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367656 (or 3367654 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The spelling of 191718240748 in words is "one hundred ninety-one billion, seven hundred eighteen million, two hundred forty thousand, seven hundred forty-eight".