20374934239 has 4 divisors (see below), whose sum is σ = 22227201000. Its totient is φ = 18522667480.

The previous prime is 20374934143. The next prime is 20374934243. The reversal of 20374934239 is 93243947302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20374934239 - 2¹⁵ = 20374901471 is a prime.

It is a super-4 number, since 4×20374934239⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20374932239) 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, 926133364 + ... + 926133385.

It is an arithmetic number, because the mean of its divisors is an integer number (5556800250).

Almost surely, 2^20374934239 is an apocalyptic number.

20374934239 is a deficient number, since it is larger than the sum of its proper divisors (1852266761).

20374934239 is a wasteful number, since it uses less digits than its factorization.

20374934239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852266760.

The product of its (nonzero) digits is 979776, while the sum is 46.

The spelling of 20374934239 in words is "twenty billion, three hundred seventy-four million, nine hundred thirty-four thousand, two hundred thirty-nine".