1644942092836 has 48 divisors (see below), whose sum is σ = 3396272696320. Its totient is φ = 682181170560.

The previous prime is 1644942092789. The next prime is 1644942092863. The reversal of 1644942092836 is 6382902494461.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12340030 + ... + 12472618.

Almost surely, 2^{1644942092836} is an apocalyptic number.

It is an amenable number.

1644942092836 is an abundant number, since it is smaller than the sum of its proper divisors (1751330603484).

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

1644942092836 is a wasteful number, since it uses less digits than its factorization.

1644942092836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146924 (or 146922 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 58.

The spelling of 1644942092836 in words is "one trillion, six hundred forty-four billion, nine hundred forty-two million, ninety-two thousand, eight hundred thirty-six".