20013790739 has 2 divisors, whose sum is σ = 20013790740. Its totient is φ = 20013790738.

The previous prime is 20013790697. The next prime is 20013790751. The reversal of 20013790739 is 93709731002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20013790739 is a prime.

It is a super-2 number, since 2×20013790739² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20013790696 and 20013790705.

It is not a weakly prime, because it can be changed into another prime (20013750739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006895369 + 10006895370.

It is an arithmetic number, because the mean of its divisors is an integer number (10006895370).

Almost surely, 2^20013790739 is an apocalyptic number.

20013790739 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013790739 is an equidigital number, since it uses as much as digits as its factorization.

20013790739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 41.

The spelling of 20013790739 in words is "twenty billion, thirteen million, seven hundred ninety thousand, seven hundred thirty-nine".