13619869157 has 2 divisors, whose sum is σ = 13619869158. Its totient is φ = 13619869156.

The previous prime is 13619869097. The next prime is 13619869183. The reversal of 13619869157 is 75196891631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11243209156 + 2376660001 = 106034^2 + 48751^2 .

It is an emirp because it is prime and its reverse (75196891631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13619869157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13619869187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6809934578 + 6809934579.

It is an arithmetic number, because the mean of its divisors is an integer number (6809934579).

Almost surely, 2^13619869157 is an apocalyptic number.

It is an amenable number.

13619869157 is a deficient number, since it is larger than the sum of its proper divisors (1).

13619869157 is an equidigital number, since it uses as much as digits as its factorization.

13619869157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 56.

The spelling of 13619869157 in words is "thirteen billion, six hundred nineteen million, eight hundred sixty-nine thousand, one hundred fifty-seven".