187351948873 has 2 divisors, whose sum is σ = 187351948874. Its totient is φ = 187351948872.

The previous prime is 187351948831. The next prime is 187351948921. The reversal of 187351948873 is 378849153781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106398611344 + 80953337529 = 326188^2 + 284523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187351948873 is a prime.

It is a super-2 number, since 2×187351948873² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (187351948813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93675974436 + 93675974437.

It is an arithmetic number, because the mean of its divisors is an integer number (93675974437).

Almost surely, 2^187351948873 is an apocalyptic number.

It is an amenable number.

187351948873 is a deficient number, since it is larger than the sum of its proper divisors (1).

187351948873 is an equidigital number, since it uses as much as digits as its factorization.

187351948873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 64.

The spelling of 187351948873 in words is "one hundred eighty-seven billion, three hundred fifty-one million, nine hundred forty-eight thousand, eight hundred seventy-three".