18095978378 has 16 divisors (see below), whose sum is σ = 28164777216. Its totient is φ = 8710744320.

The previous prime is 18095978377. The next prime is 18095978393. The reversal of 18095978378 is 87387959081.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18095978371) 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, 744176 + ... + 768107.

It is an arithmetic number, because the mean of its divisors is an integer number (1760298576).

Almost surely, 2^18095978378 is an apocalyptic number.

18095978378 is a deficient number, since it is larger than the sum of its proper divisors (10068798838).

18095978378 is a wasteful number, since it uses less digits than its factorization.

18095978378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512509.

The product of its (nonzero) digits is 30481920, while the sum is 65.

The spelling of 18095978378 in words is "eighteen billion, ninety-five million, nine hundred seventy-eight thousand, three hundred seventy-eight".