2185916674037 has 2 divisors, whose sum is σ = 2185916674038. Its totient is φ = 2185916674036.

The previous prime is 2185916674033. The next prime is 2185916674079. The reversal of 2185916674037 is 7304766195812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2141448830161 + 44467843876 = 1463369^2 + 210874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2185916674037 - 2² = 2185916674033 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185916674031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092958337018 + 1092958337019.

It is an arithmetic number, because the mean of its divisors is an integer number (1092958337019).

It is a 1-persistent number, because it is pandigital, but 2⋅2185916674037 = 4371833348074 is not.

Almost surely, 2^{2185916674037} is an apocalyptic number.

It is an amenable number.

2185916674037 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185916674037 is an equidigital number, since it uses as much as digits as its factorization.

2185916674037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 2185916674037 in words is "two trillion, one hundred eighty-five billion, nine hundred sixteen million, six hundred seventy-four thousand, thirty-seven".