1887136461131 has 2 divisors, whose sum is σ = 1887136461132. Its totient is φ = 1887136461130.

The previous prime is 1887136461109. The next prime is 1887136461139. The reversal of 1887136461131 is 1311646317881.

It is a strong prime.

It is an emirp because it is prime and its reverse (1311646317881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1887136461131 - 2³⁴ = 1869956591947 is a prime.

It is a super-2 number, since 2×1887136461131² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1887136461131.

It is not a weakly prime, because it can be changed into another prime (1887136461139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 943568230565 + 943568230566.

It is an arithmetic number, because the mean of its divisors is an integer number (943568230566).

Almost surely, 2^{1887136461131} is an apocalyptic number.

1887136461131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1887136461131 is an equidigital number, since it uses as much as digits as its factorization.

1887136461131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The spelling of 1887136461131 in words is "one trillion, eight hundred eighty-seven billion, one hundred thirty-six million, four hundred sixty-one thousand, one hundred thirty-one".