13487886749 has 2 divisors, whose sum is σ = 13487886750. Its totient is φ = 13487886748.

The previous prime is 13487886719. The next prime is 13487886761. The reversal of 13487886749 is 94768878431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13446025849 + 41860900 = 115957^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 13487886749 - 2³² = 9192919453 is a prime.

It is a super-3 number, since 3×13487886749³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13487886719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6743943374 + 6743943375.

It is an arithmetic number, because the mean of its divisors is an integer number (6743943375).

Almost surely, 2^13487886749 is an apocalyptic number.

It is an amenable number.

13487886749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13487886749 is an equidigital number, since it uses as much as digits as its factorization.

13487886749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65028096, while the sum is 65.

The spelling of 13487886749 in words is "thirteen billion, four hundred eighty-seven million, eight hundred eighty-six thousand, seven hundred forty-nine".