18102778342 has 16 divisors (see below), whose sum is σ = 29625506064. Its totient is φ = 8227764000.

The previous prime is 18102778327. The next prime is 18102778349. The reversal of 18102778342 is 24387720181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18102778349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 248992 + ... + 313372.

It is an arithmetic number, because the mean of its divisors is an integer number (1851594129).

Almost surely, 2^18102778342 is an apocalyptic number.

18102778342 is a deficient number, since it is larger than the sum of its proper divisors (11522727722).

18102778342 is a wasteful number, since it uses less digits than its factorization.

18102778342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77175.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 18102778342 in words is "eighteen billion, one hundred two million, seven hundred seventy-eight thousand, three hundred forty-two".