1361401513 has 12 divisors (see below), whose sum is σ = 1400178780. Its totient is φ = 1323585536.

The previous prime is 1361401507. The next prime is 1361401541. The reversal of 1361401513 is 3151041631.

It can be written as a sum of positive squares in 6 ways, for example, as 40297104 + 1321104409 = 6348^2 + 36347^2 .

It is not a de Polignac number, because 1361401513 - 2⁹ = 1361401001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361401213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315273 + ... + 319561.

It is an arithmetic number, because the mean of its divisors is an integer number (116681565).

Almost surely, 2^1361401513 is an apocalyptic number.

It is an amenable number.

1361401513 is a deficient number, since it is larger than the sum of its proper divisors (38777267).

1361401513 is an equidigital number, since it uses as much as digits as its factorization.

1361401513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4455 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1361401513 is about 36897.1748647508. The cubic root of 1361401513 is about 1108.3121041756.

The spelling of 1361401513 in words is "one billion, three hundred sixty-one million, four hundred one thousand, five hundred thirteen".