18780023807 has 8 divisors (see below), whose sum is σ = 19302177216. Its totient is φ = 18258638112.

The previous prime is 18780023797. The next prime is 18780023819. The reversal of 18780023807 is 70832008781.

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

It is a cyclic number.

It is not a de Polignac number, because 18780023807 - 2⁴ = 18780023791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18780023827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142148 + ... + 240345.

It is an arithmetic number, because the mean of its divisors is an integer number (2412772152).

Almost surely, 2^18780023807 is an apocalyptic number.

18780023807 is a deficient number, since it is larger than the sum of its proper divisors (522153409).

18780023807 is a wasteful number, since it uses less digits than its factorization.

18780023807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383857.

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 18780023807 in words is "eighteen billion, seven hundred eighty million, twenty-three thousand, eight hundred seven".