18054476145 has 24 divisors (see below), whose sum is σ = 31316528256. Its totient is φ = 9622253088.

The previous prime is 18054476087. The next prime is 18054476171. The reversal of 18054476145 is 54167445081.

18054476145 is a `hidden beast` number, since 1 + 8 + 0 + 544 + 7 + 61 + 45 = 666.

It is not a de Polignac number, because 18054476145 - 2⁸ = 18054475889 is a prime.

It is a super-3 number, since 3×18054476145³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18054476145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76939 + ... + 205008.

It is an arithmetic number, because the mean of its divisors is an integer number (1304855344).

Almost surely, 2^18054476145 is an apocalyptic number.

18054476145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18054476145 is a deficient number, since it is larger than the sum of its proper divisors (13262052111).

18054476145 is a wasteful number, since it uses less digits than its factorization.

18054476145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283381 (or 283378 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 18054476145 in words is "eighteen billion, fifty-four million, four hundred seventy-six thousand, one hundred forty-five".