17994840370 has 32 divisors (see below), whose sum is σ = 35540476272. Its totient is φ = 6518883072.

The previous prime is 17994840329. The next prime is 17994840371. The reversal of 17994840370 is 7304849971.

It can be written as a sum of positive squares in 8 ways, for example, as 3598920081 + 14395920289 = 59991^2 + 119983^2 .

It is not an unprimeable number, because it can be changed into a prime (17994840371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1298977 + ... + 1312756.

Almost surely, 2^17994840370 is an apocalyptic number.

17994840370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17994840370 is a deficient number, since it is larger than the sum of its proper divisors (17545635902).

17994840370 is a wasteful number, since it uses less digits than its factorization.

17994840370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611806.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 17994840370 in words is "seventeen billion, nine hundred ninety-four million, eight hundred forty thousand, three hundred seventy".