20349337389 has 8 divisors (see below), whose sum is σ = 27187711392. Its totient is φ = 13538594160.

The previous prime is 20349337363. The next prime is 20349337391. The reversal of 20349337389 is 98373394302.

It is a happy number.

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

It is not a de Polignac number, because 20349337389 - 2⁹ = 20349336877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20349336389) 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, 6905974 + ... + 6908919.

It is an arithmetic number, because the mean of its divisors is an integer number (3398463924).

Almost surely, 2^20349337389 is an apocalyptic number.

It is an amenable number.

20349337389 is a deficient number, since it is larger than the sum of its proper divisors (6838374003).

20349337389 is a wasteful number, since it uses less digits than its factorization.

20349337389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13815387.

The product of its (nonzero) digits is 2939328, while the sum is 51.

The spelling of 20349337389 in words is "twenty billion, three hundred forty-nine million, three hundred thirty-seven thousand, three hundred eighty-nine".