18105053546 has 4 divisors (see below), whose sum is σ = 27157580322. Its totient is φ = 9052526772.

The previous prime is 18105053537. The next prime is 18105053591. The reversal of 18105053546 is 64535050181.

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

It can be written as a sum of positive squares in only one way, i.e., 13604656321 + 4500397225 = 116639^2 + 67085^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4526263385 + ... + 4526263388.

Almost surely, 2^18105053546 is an apocalyptic number.

18105053546 is a deficient number, since it is larger than the sum of its proper divisors (9052526776).

18105053546 is an equidigital number, since it uses as much as digits as its factorization.

18105053546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9052526775.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 18105053546 in words is "eighteen billion, one hundred five million, fifty-three thousand, five hundred forty-six".