1361264653 has 16 divisors (see below), whose sum is σ = 1627933696. Its totient is φ = 1113678720.

The previous prime is 1361264651. The next prime is 1361264677. The reversal of 1361264653 is 3564621631.

It is not a de Polignac number, because 1361264653 - 2¹ = 1361264651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361264651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27126 + ... + 58807.

It is an arithmetic number, because the mean of its divisors is an integer number (101745856).

Almost surely, 2^1361264653 is an apocalyptic number.

It is an amenable number.

1361264653 is a deficient number, since it is larger than the sum of its proper divisors (266669043).

1361264653 is an equidigital number, since it uses as much as digits as its factorization.

1361264653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86044.

The product of its digits is 77760, while the sum is 37.

The square root of 1361264653 is about 36895.3202046005. The cubic root of 1361264653 is about 1108.2749638522.

The spelling of 1361264653 in words is "one billion, three hundred sixty-one million, two hundred sixty-four thousand, six hundred fifty-three".