18279773254 has 16 divisors (see below), whose sum is σ = 28145113776. Its totient is φ = 8901036000.

The previous prime is 18279773189. The next prime is 18279773257. The reversal of 18279773254 is 45237797281.

It is a super-2 number, since 2×18279773254² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18279773195 and 18279773204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18279773257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729432 + ... + 754075.

It is an arithmetic number, because the mean of its divisors is an integer number (1759069611).

Almost surely, 2^18279773254 is an apocalyptic number.

18279773254 is a deficient number, since it is larger than the sum of its proper divisors (9865340522).

18279773254 is a wasteful number, since it uses less digits than its factorization.

18279773254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483671.

The product of its digits is 5927040, while the sum is 55.

The spelling of 18279773254 in words is "eighteen billion, two hundred seventy-nine million, seven hundred seventy-three thousand, two hundred fifty-four".