18131950826 has 8 divisors (see below), whose sum is σ = 29670465024. Its totient is φ = 8241795820.

The previous prime is 18131950799. The next prime is 18131950829. The reversal of 18131950826 is 62805913181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18131950829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412089770 + ... + 412089813.

It is an arithmetic number, because the mean of its divisors is an integer number (3708808128).

Almost surely, 2^18131950826 is an apocalyptic number.

18131950826 is a deficient number, since it is larger than the sum of its proper divisors (11538514198).

18131950826 is a wasteful number, since it uses less digits than its factorization.

18131950826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824179596.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 18131950826 in words is "eighteen billion, one hundred thirty-one million, nine hundred fifty thousand, eight hundred twenty-six".