187540963573 has 2 divisors, whose sum is σ = 187540963574. Its totient is φ = 187540963572.

The previous prime is 187540963543. The next prime is 187540963609. The reversal of 187540963573 is 375369045781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186548839569 + 992124004 = 431913^2 + 31498^2 .

It is a cyclic number.

It is not a de Polignac number, because 187540963573 - 2³³ = 178951028981 is a prime.

It is a super-2 number, since 2×187540963573² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187540963543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93770481786 + 93770481787.

It is an arithmetic number, because the mean of its divisors is an integer number (93770481787).

Almost surely, 2^187540963573 is an apocalyptic number.

It is an amenable number.

187540963573 is a deficient number, since it is larger than the sum of its proper divisors (1).

187540963573 is an equidigital number, since it uses as much as digits as its factorization.

187540963573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 187540963573 in words is "one hundred eighty-seven billion, five hundred forty million, nine hundred sixty-three thousand, five hundred seventy-three".