1356183661 has 16 divisors (see below), whose sum is σ = 1633344768. Its totient is φ = 1100880000.

The previous prime is 1356183641. The next prime is 1356183671. The reversal of 1356183661 is 1663816531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356183661 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 (1356183611) 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, 25440 + ... + 57961.

It is an arithmetic number, because the mean of its divisors is an integer number (102084048).

Almost surely, 2^1356183661 is an apocalyptic number.

It is an amenable number.

1356183661 is a deficient number, since it is larger than the sum of its proper divisors (277161107).

1356183661 is a wasteful number, since it uses less digits than its factorization.

1356183661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83532.

The product of its digits is 77760, while the sum is 40.

The square root of 1356183661 is about 36826.3989686746. The cubic root of 1356183661 is about 1106.8943464613.

The spelling of 1356183661 in words is "one billion, three hundred fifty-six million, one hundred eighty-three thousand, six hundred sixty-one".