1018452261873 has 4 divisors (see below), whose sum is σ = 1357936349168. Its totient is φ = 678968174580.

The previous prime is 1018452261823. The next prime is 1018452261899. The reversal of 1018452261873 is 3781622548101.

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 1018452261873 - 2²⁴ = 1018435484657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018452261823) 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, 169742043643 + ... + 169742043648.

It is an arithmetic number, because the mean of its divisors is an integer number (339484087292).

Almost surely, 2^{1018452261873} is an apocalyptic number.

It is an amenable number.

1018452261873 is a deficient number, since it is larger than the sum of its proper divisors (339484087295).

1018452261873 is an equidigital number, since it uses as much as digits as its factorization.

1018452261873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339484087294.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 1018452261873 in words is "one trillion, eighteen billion, four hundred fifty-two million, two hundred sixty-one thousand, eight hundred seventy-three".