17918267340 has 24 divisors (see below), whose sum is σ = 50171148720. Its totient is φ = 4778204608.

The previous prime is 17918267327. The next prime is 17918267363. The reversal of 17918267340 is 4376281971.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 17918267340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149318835 + ... + 149318954.

It is an arithmetic number, because the mean of its divisors is an integer number (2090464530).

Almost surely, 2^17918267340 is an apocalyptic number.

17918267340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17918267340 is an abundant number, since it is smaller than the sum of its proper divisors (32252881380).

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

17918267340 is a wasteful number, since it uses less digits than its factorization.

17918267340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298637801 (or 298637799 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 17918267340 in words is "seventeen billion, nine hundred eighteen million, two hundred sixty-seven thousand, three hundred forty".