1361406636 has 24 divisors (see below), whose sum is σ = 3529573040. Its totient is φ = 453802176.

The previous prime is 1361406623. The next prime is 1361406659. The reversal of 1361406636 is 6366041631.

1361406636 is a `hidden beast` number, since 1 + 3 + 6 + 14 + 0 + 6 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1361406636.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6302701 + ... + 6302916.

Almost surely, 2^1361406636 is an apocalyptic number.

It is an amenable number.

1361406636 is an abundant number, since it is smaller than the sum of its proper divisors (2168166404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361406636 is a wasteful number, since it uses less digits than its factorization.

1361406636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12605630 (or 12605622 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 1361406636 is about 36897.2442873448. The cubic root of 1361406636 is about 1108.3134943792.

The spelling of 1361406636 in words is "one billion, three hundred sixty-one million, four hundred six thousand, six hundred thirty-six".