18696278370 has 64 divisors (see below), whose sum is σ = 55943156736. Its totient is φ = 3884940480.

The previous prime is 18696278351. The next prime is 18696278371. The reversal of 18696278370 is 7387269681.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18696278370.

It is not an unprimeable number, because it can be changed into a prime (18696278371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4044504 + ... + 4049123.

It is an arithmetic number, because the mean of its divisors is an integer number (874111824).

Almost surely, 2^18696278370 is an apocalyptic number.

18696278370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18696278370 is an abundant number, since it is smaller than the sum of its proper divisors (37246878366).

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

18696278370 is a wasteful number, since it uses less digits than its factorization.

18696278370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093655.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 18696278370 in words is "eighteen billion, six hundred ninety-six million, two hundred seventy-eight thousand, three hundred seventy".