1807842162157 has 2 divisors, whose sum is σ = 1807842162158. Its totient is φ = 1807842162156.

The previous prime is 1807842162143. The next prime is 1807842162179. The reversal of 1807842162157 is 7512612487081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1805613000361 + 2229161796 = 1343731^2 + 47214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1807842162157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1807842162457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903921081078 + 903921081079.

It is an arithmetic number, because the mean of its divisors is an integer number (903921081079).

Almost surely, 2^{1807842162157} is an apocalyptic number.

It is an amenable number.

1807842162157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1807842162157 is an equidigital number, since it uses as much as digits as its factorization.

1807842162157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 1807842162157 in words is "one trillion, eight hundred seven billion, eight hundred forty-two million, one hundred sixty-two thousand, one hundred fifty-seven".