1363263661 has 16 divisors (see below), whose sum is σ = 1447467840. Its totient is φ = 1280361600.

The previous prime is 1363263647. The next prime is 1363263739. The reversal of 1363263661 is 1663623631.

It is a cyclic number.

It is not a de Polignac number, because 1363263661 - 2¹³ = 1363255469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1363263661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363263611) 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, 1296586 + ... + 1297636.

It is an arithmetic number, because the mean of its divisors is an integer number (90466740).

Almost surely, 2^1363263661 is an apocalyptic number.

It is an amenable number.

1363263661 is a deficient number, since it is larger than the sum of its proper divisors (84204179).

1363263661 is a wasteful number, since it uses less digits than its factorization.

1363263661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596.

The product of its digits is 69984, while the sum is 37.

The square root of 1363263661 is about 36922.4005313847. The cubic root of 1363263661 is about 1108.8171966305.

The spelling of 1363263661 in words is "one billion, three hundred sixty-three million, two hundred sixty-three thousand, six hundred sixty-one".