18049474758 has 32 divisors (see below), whose sum is σ = 41420332800. Its totient is φ = 5136444000.

The previous prime is 18049474747. The next prime is 18049474777. The reversal of 18049474758 is 85747494081.

It is a junction number, because it is equal to n+sod(n) for n = 18049474698 and 18049474707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845533 + ... + 866616.

It is an arithmetic number, because the mean of its divisors is an integer number (1294385400).

Almost surely, 2^18049474758 is an apocalyptic number.

18049474758 is an abundant number, since it is smaller than the sum of its proper divisors (23370858042).

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

18049474758 is a wasteful number, since it uses less digits than its factorization.

18049474758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712412.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 18049474758 in words is "eighteen billion, forty-nine million, four hundred seventy-four thousand, seven hundred fifty-eight".