1836664656 has 40 divisors (see below), whose sum is σ = 4908331680. Its totient is φ = 591110016.

The previous prime is 1836664651. The next prime is 1836664691. The reversal of 1836664656 is 6564666381.

It is a junction number, because it is equal to n+sod(n) for n = 1836664599 and 1836664608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836664651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658330 + ... + 661113.

It is an arithmetic number, because the mean of its divisors is an integer number (122708292).

Almost surely, 2^1836664656 is an apocalyptic number.

1836664656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1836664656 is an abundant number, since it is smaller than the sum of its proper divisors (3071667024).

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

1836664656 is a wasteful number, since it uses less digits than its factorization.

1836664656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319483 (or 1319477 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The square root of 1836664656 is about 42856.3257407818. The cubic root of 1836664656 is about 1224.6442739985.

The spelling of 1836664656 in words is "one billion, eight hundred thirty-six million, six hundred sixty-four thousand, six hundred fifty-six".