16818987190 has 16 divisors (see below), whose sum is σ = 30512558592. Its totient is φ = 6674621184.

The previous prime is 16818987139. The next prime is 16818987197. The reversal of 16818987190 is 9178981861.

It is a super-2 number, since 2×16818987190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16818987197) 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, 6620379 + ... + 6622918.

It is an arithmetic number, because the mean of its divisors is an integer number (1907034912).

Almost surely, 2^16818987190 is an apocalyptic number.

16818987190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16818987190 is a deficient number, since it is larger than the sum of its proper divisors (13693571402).

16818987190 is a wasteful number, since it uses less digits than its factorization.

16818987190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13243431.

The product of its (nonzero) digits is 1741824, while the sum is 58.

The spelling of 16818987190 in words is "sixteen billion, eight hundred eighteen million, nine hundred eighty-seven thousand, one hundred ninety".