187464319049 has 4 divisors (see below), whose sum is σ = 214244936064. Its totient is φ = 160683702036.

The previous prime is 187464318997. The next prime is 187464319117. The reversal of 187464319049 is 940913464781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 187464319049 - 2⁸ = 187464318793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 187464318985 and 187464319003.

It is not an unprimeable number, because it can be changed into a prime (187464319349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13390308497 + ... + 13390308510.

It is an arithmetic number, because the mean of its divisors is an integer number (53561234016).

Almost surely, 2^187464319049 is an apocalyptic number.

It is an amenable number.

187464319049 is a deficient number, since it is larger than the sum of its proper divisors (26780617015).

187464319049 is an equidigital number, since it uses as much as digits as its factorization.

187464319049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26780617014.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 187464319049 in words is "one hundred eighty-seven billion, four hundred sixty-four million, three hundred nineteen thousand, forty-nine".