2185916674038 has 64 divisors (see below), whose sum is σ = 4751553331200. Its totient is φ = 667856962080.

The previous prime is 2185916674037. The next prime is 2185916674079. The reversal of 2185916674038 is 8304766195812.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185916674031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14623545 + ... + 14772267.

It is an arithmetic number, because the mean of its divisors is an integer number (74243020800).

It is a 1-persistent number, because it is pandigital, but 2⋅2185916674038 = 4371833348076 is not.

Almost surely, 2^{2185916674038} is an apocalyptic number.

2185916674038 is an abundant number, since it is smaller than the sum of its proper divisors (2565636657162).

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

2185916674038 is a wasteful number, since it uses less digits than its factorization.

2185916674038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152937.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 2185916674038 in words is "two trillion, one hundred eighty-five billion, nine hundred sixteen million, six hundred seventy-four thousand, thirty-eight".