17992885940 has 12 divisors (see below), whose sum is σ = 37785060516. Its totient is φ = 7197154368.

The previous prime is 17992885913. The next prime is 17992885949. The reversal of 17992885940 is 4958829971.

It can be written as a sum of positive squares in 2 ways, for example, as 11892338704 + 6100547236 = 109052^2 + 78106^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17992885949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449822129 + ... + 449822168.

It is an arithmetic number, because the mean of its divisors is an integer number (3148755043).

Almost surely, 2^17992885940 is an apocalyptic number.

17992885940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17992885940 is an abundant number, since it is smaller than the sum of its proper divisors (19792174576).

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

17992885940 is a wasteful number, since it uses less digits than its factorization.

17992885940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899644306 (or 899644304 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 17992885940 in words is "seventeen billion, nine hundred ninety-two million, eight hundred eighty-five thousand, nine hundred forty".