18739006907 has 4 divisors (see below), whose sum is σ = 18847325040. Its totient is φ = 18630688776.

The previous prime is 18739006889. The next prime is 18739006921. The reversal of 18739006907 is 70960093781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70960093781 = 38803 ⋅1828727.

It is a cyclic number.

It is not a de Polignac number, because 18739006907 - 2¹⁸ = 18738744763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18739006967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54158807 + ... + 54159152.

It is an arithmetic number, because the mean of its divisors is an integer number (4711831260).

Almost surely, 2^18739006907 is an apocalyptic number.

18739006907 is a deficient number, since it is larger than the sum of its proper divisors (108318133).

18739006907 is a wasteful number, since it uses less digits than its factorization.

18739006907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108318132.

The product of its (nonzero) digits is 571536, while the sum is 50.

The spelling of 18739006907 in words is "eighteen billion, seven hundred thirty-nine million, six thousand, nine hundred seven".