18875747762049 has 4 divisors (see below), whose sum is σ = 25167663682736. Its totient is φ = 12583831841364.

The previous prime is 18875747761993. The next prime is 18875747762149. The reversal of 18875747762049 is 94026774757881.

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 not a de Polignac number, because 18875747762049 - 2¹⁹ = 18875747237761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18875747762149) 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, 3145957960339 + ... + 3145957960344.

It is an arithmetic number, because the mean of its divisors is an integer number (6291915920684).

Almost surely, 2^{18875747762049} is an apocalyptic number.

It is an amenable number.

18875747762049 is a deficient number, since it is larger than the sum of its proper divisors (6291915920687).

18875747762049 is an equidigital number, since it uses as much as digits as its factorization.

18875747762049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291915920686.

The product of its (nonzero) digits is 1327656960, while the sum is 75.

The spelling of 18875747762049 in words is "eighteen trillion, eight hundred seventy-five billion, seven hundred forty-seven million, seven hundred sixty-two thousand, forty-nine".