1836669851537 has 2 divisors, whose sum is σ = 1836669851538. Its totient is φ = 1836669851536.

The previous prime is 1836669851477. The next prime is 1836669851563. The reversal of 1836669851537 is 7351589666381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176702088081 + 659967763456 = 1084759^2 + 812384^2 .

It is an emirp because it is prime and its reverse (7351589666381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1836669851537 - 2²⁰ = 1836668802961 is a prime.

It is a super-2 number, since 2×1836669851537² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1836669851587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918334925768 + 918334925769.

It is an arithmetic number, because the mean of its divisors is an integer number (918334925769).

Almost surely, 2^{1836669851537} is an apocalyptic number.

It is an amenable number.

1836669851537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836669851537 is an equidigital number, since it uses as much as digits as its factorization.

1836669851537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 195955200, while the sum is 68.

The spelling of 1836669851537 in words is "one trillion, eight hundred thirty-six billion, six hundred sixty-nine million, eight hundred fifty-one thousand, five hundred thirty-seven".