13920363869 has 2 divisors, whose sum is σ = 13920363870. Its totient is φ = 13920363868.

The previous prime is 13920363799. The next prime is 13920363881. The reversal of 13920363869 is 96836302931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12585922969 + 1334440900 = 112187^2 + 36530^2 .

It is a cyclic number.

It is not a de Polignac number, because 13920363869 - 2¹² = 13920359773 is a prime.

It is a super-2 number, since 2×13920363869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13920363169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6960181934 + 6960181935.

It is an arithmetic number, because the mean of its divisors is an integer number (6960181935).

Almost surely, 2^13920363869 is an apocalyptic number.

It is an amenable number.

13920363869 is a deficient number, since it is larger than the sum of its proper divisors (1).

13920363869 is an equidigital number, since it uses as much as digits as its factorization.

13920363869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 13920363869 in words is "thirteen billion, nine hundred twenty million, three hundred sixty-three thousand, eight hundred sixty-nine".