18570078479 has 4 divisors (see below), whose sum is σ = 18577360560. Its totient is φ = 18562796400.

The previous prime is 18570078437. The next prime is 18570078497. The reversal of 18570078479 is 97487007581.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18570078479 - 2⁸ = 18570078223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18570075479) 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, 3637214 + ... + 3642315.

It is an arithmetic number, because the mean of its divisors is an integer number (4644340140).

Almost surely, 2^18570078479 is an apocalyptic number.

18570078479 is a deficient number, since it is larger than the sum of its proper divisors (7282081).

18570078479 is an equidigital number, since it uses as much as digits as its factorization.

18570078479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282080.

The product of its (nonzero) digits is 3951360, while the sum is 56.

The spelling of 18570078479 in words is "eighteen billion, five hundred seventy million, seventy-eight thousand, four hundred seventy-nine".