15338145749 has 2 divisors, whose sum is σ = 15338145750. Its totient is φ = 15338145748.

The previous prime is 15338145743. The next prime is 15338145761. The reversal of 15338145749 is 94754183351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13376541649 + 1961604100 = 115657^2 + 44290^2 .

It is a cyclic number.

It is not a de Polignac number, because 15338145749 - 2¹⁶ = 15338080213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15338145697 and 15338145706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15338145743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7669072874 + 7669072875.

It is an arithmetic number, because the mean of its divisors is an integer number (7669072875).

Almost surely, 2^15338145749 is an apocalyptic number.

It is an amenable number.

15338145749 is a deficient number, since it is larger than the sum of its proper divisors (1).

15338145749 is an equidigital number, since it uses as much as digits as its factorization.

15338145749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 50.

The spelling of 15338145749 in words is "fifteen billion, three hundred thirty-eight million, one hundred forty-five thousand, seven hundred forty-nine".