18081846546 has 16 divisors (see below), whose sum is σ = 38067045600. Its totient is φ = 5710056768.

The previous prime is 18081846511. The next prime is 18081846581. The reversal of 18081846546 is 64564818081.

It is an interprime number because it is at equal distance from previous prime (18081846511) and next prime (18081846581).

It is a super-3 number, since 3×18081846546³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79306231 + ... + 79306458.

It is an arithmetic number, because the mean of its divisors is an integer number (2379190350).

Almost surely, 2^18081846546 is an apocalyptic number.

18081846546 is an abundant number, since it is smaller than the sum of its proper divisors (19985199054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18081846546 is a wasteful number, since it uses less digits than its factorization.

18081846546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158612713.

The product of its (nonzero) digits is 1474560, while the sum is 51.

The spelling of 18081846546 in words is "eighteen billion, eighty-one million, eight hundred forty-six thousand, five hundred forty-six".