1845643668902 has 24 divisors (see below), whose sum is σ = 3045068329800. Its totient is φ = 838365359040.

The previous prime is 1845643668901. The next prime is 1845643668919. The reversal of 1845643668902 is 2098663465481.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845643668901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2200652 + ... + 2921327.

It is an arithmetic number, because the mean of its divisors is an integer number (126877847075).

Almost surely, 2^{1845643668902} is an apocalyptic number.

1845643668902 is a deficient number, since it is larger than the sum of its proper divisors (1199424660898).

1845643668902 is a wasteful number, since it uses less digits than its factorization.

1845643668902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123492 (or 5123481 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 62.

The spelling of 1845643668902 in words is "one trillion, eight hundred forty-five billion, six hundred forty-three million, six hundred sixty-eight thousand, nine hundred two".