187140073 has 2 divisors, whose sum is σ = 187140074. Its totient is φ = 187140072.

The previous prime is 187140067. The next prime is 187140077. The reversal of 187140073 is 370041781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141063129 + 46076944 = 11877^2 + 6788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187140073 is a prime.

It is not a weakly prime, because it can be changed into another prime (187140077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93570036 + 93570037.

It is an arithmetic number, because the mean of its divisors is an integer number (93570037).

Almost surely, 2^187140073 is an apocalyptic number.

It is an amenable number.

187140073 is a deficient number, since it is larger than the sum of its proper divisors (1).

187140073 is an equidigital number, since it uses as much as digits as its factorization.

187140073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 187140073 is about 13679.9149485660. The cubic root of 187140073 is about 571.9906524056.

The spelling of 187140073 in words is "one hundred eighty-seven million, one hundred forty thousand, seventy-three".