18892549045 has 4 divisors (see below), whose sum is σ = 22671058860. Its totient is φ = 15114039232.

The previous prime is 18892549043. The next prime is 18892549079. The reversal of 18892549045 is 54094529881.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2307745521 + 16584803524 = 48039^2 + 128782^2 .

It is a cyclic number.

It is not a de Polignac number, because 18892549045 - 2¹ = 18892549043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18892549043) 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, 1889254900 + ... + 1889254909.

It is an arithmetic number, because the mean of its divisors is an integer number (5667764715).

Almost surely, 2^18892549045 is an apocalyptic number.

It is an amenable number.

18892549045 is a deficient number, since it is larger than the sum of its proper divisors (3778509815).

18892549045 is an equidigital number, since it uses as much as digits as its factorization.

18892549045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778509814.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 18892549045 in words is "eighteen billion, eight hundred ninety-two million, five hundred forty-nine thousand, forty-five".