18154536734 has 4 divisors (see below), whose sum is σ = 27231805104. Its totient is φ = 9077268366.

The previous prime is 18154536731. The next prime is 18154536749. The reversal of 18154536734 is 43763545181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43763545181 = 41 ⋅1067403541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18154536731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4538634182 + ... + 4538634185.

It is an arithmetic number, because the mean of its divisors is an integer number (6807951276).

Almost surely, 2^18154536734 is an apocalyptic number.

18154536734 is a deficient number, since it is larger than the sum of its proper divisors (9077268370).

18154536734 is an equidigital number, since it uses as much as digits as its factorization.

18154536734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077268369.

The product of its digits is 1209600, while the sum is 47.

The spelling of 18154536734 in words is "eighteen billion, one hundred fifty-four million, five hundred thirty-six thousand, seven hundred thirty-four".