187474297273 has 2 divisors, whose sum is σ = 187474297274. Its totient is φ = 187474297272.

The previous prime is 187474297183. The next prime is 187474297379. The reversal of 187474297273 is 372792474781.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127897786384 + 59576510889 = 357628^2 + 244083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187474297273 is a prime.

It is a super-2 number, since 2×187474297273² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (187474298273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93737148636 + 93737148637.

It is an arithmetic number, because the mean of its divisors is an integer number (93737148637).

Almost surely, 2^187474297273 is an apocalyptic number.

It is an amenable number.

187474297273 is a deficient number, since it is larger than the sum of its proper divisors (1).

187474297273 is an equidigital number, since it uses as much as digits as its factorization.

187474297273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33191424, while the sum is 61.

The spelling of 187474297273 in words is "one hundred eighty-seven billion, four hundred seventy-four million, two hundred ninety-seven thousand, two hundred seventy-three".