39730120918 has 4 divisors (see below), whose sum is σ = 59595181380. Its totient is φ = 19865060458.

The previous prime is 39730120909. The next prime is 39730120921. The reversal of 39730120918 is 81902103793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81902103793 = 691 ⋅118526923.

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 as a sum of consecutive naturals, namely, 9932530228 + ... + 9932530231.

It is an arithmetic number, because the mean of its divisors is an integer number (14898795345).

Almost surely, 2^39730120918 is an apocalyptic number.

39730120918 is a deficient number, since it is larger than the sum of its proper divisors (19865060462).

39730120918 is a wasteful number, since it uses less digits than its factorization.

39730120918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19865060461.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 39730120918 in words is "thirty-nine billion, seven hundred thirty million, one hundred twenty thousand, nine hundred eighteen".