187400240513 has 2 divisors, whose sum is σ = 187400240514. Its totient is φ = 187400240512.

The previous prime is 187400240441. The next prime is 187400240611. The reversal of 187400240513 is 315042004781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102702943729 + 84697296784 = 320473^2 + 291028^2 .

It is a cyclic number.

It is not a de Polignac number, because 187400240513 - 2¹² = 187400236417 is a prime.

It is not a weakly prime, because it can be changed into another prime (187400248513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93700120256 + 93700120257.

It is an arithmetic number, because the mean of its divisors is an integer number (93700120257).

Almost surely, 2^187400240513 is an apocalyptic number.

It is an amenable number.

187400240513 is a deficient number, since it is larger than the sum of its proper divisors (1).

187400240513 is an equidigital number, since it uses as much as digits as its factorization.

187400240513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 187400240513 in words is "one hundred eighty-seven billion, four hundred million, two hundred forty thousand, five hundred thirteen".