13961048749 has 2 divisors, whose sum is σ = 13961048750. Its totient is φ = 13961048748.

The previous prime is 13961048723. The next prime is 13961048753. The reversal of 13961048749 is 94784016931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11568078025 + 2392970724 = 107555^2 + 48918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13961048749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13961048696 and 13961048705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13961048149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6980524374 + 6980524375.

It is an arithmetic number, because the mean of its divisors is an integer number (6980524375).

Almost surely, 2^13961048749 is an apocalyptic number.

It is an amenable number.

13961048749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13961048749 is an equidigital number, since it uses as much as digits as its factorization.

13961048749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 13961048749 in words is "thirteen billion, nine hundred sixty-one million, forty-eight thousand, seven hundred forty-nine".