18234061378 has 8 divisors (see below), whose sum is σ = 29455022268. Its totient is φ = 8415720624.

The previous prime is 18234061367. The next prime is 18234061387. The reversal of 18234061378 is 87316043281.

It can be written as a sum of positive squares in 2 ways, for example, as 17940727249 + 293334129 = 133943^2 + 17127^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350655001 + ... + 350655052.

Almost surely, 2^18234061378 is an apocalyptic number.

18234061378 is a deficient number, since it is larger than the sum of its proper divisors (11220960890).

18234061378 is a wasteful number, since it uses less digits than its factorization.

18234061378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701310068.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 18234061378 in words is "eighteen billion, two hundred thirty-four million, sixty-one thousand, three hundred seventy-eight".