1836870157 has 2 divisors, whose sum is σ = 1836870158. Its totient is φ = 1836870156.

The previous prime is 1836870073. The next prime is 1836870193. The reversal of 1836870157 is 7510786381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1294632361 + 542237796 = 35981^2 + 23286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1836870157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1836870197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918435078 + 918435079.

It is an arithmetic number, because the mean of its divisors is an integer number (918435079).

Almost surely, 2^1836870157 is an apocalyptic number.

It is an amenable number.

1836870157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836870157 is an equidigital number, since it uses as much as digits as its factorization.

1836870157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 1836870157 is about 42858.7232310996. The cubic root of 1836870157 is about 1224.6899466868.

The spelling of 1836870157 in words is "one billion, eight hundred thirty-six million, eight hundred seventy thousand, one hundred fifty-seven".