1361515087 has 2 divisors, whose sum is σ = 1361515088. Its totient is φ = 1361515086.

The previous prime is 1361515081. The next prime is 1361515117. The reversal of 1361515087 is 7805151631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361515087 - 2¹⁵ = 1361482319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361515081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680757543 + 680757544.

It is an arithmetic number, because the mean of its divisors is an integer number (680757544).

Almost surely, 2^1361515087 is an apocalyptic number.

1361515087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361515087 is an equidigital number, since it uses as much as digits as its factorization.

1361515087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 1361515087 is about 36898.7138935763. The cubic root of 1361515087 is about 1108.3429233811.

The spelling of 1361515087 in words is "one billion, three hundred sixty-one million, five hundred fifteen thousand, eighty-seven".