17897249136 has 40 divisors (see below), whose sum is σ = 49791066640. Its totient is φ = 5506845696.

The previous prime is 17897249119. The next prime is 17897249323. The reversal of 17897249136 is 63194279871.

It is a happy number.

It is a congruent number.

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, 14340121 + ... + 14341368.

It is an arithmetic number, because the mean of its divisors is an integer number (1244776666).

Almost surely, 2^17897249136 is an apocalyptic number.

17897249136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

17897249136 is an abundant number, since it is smaller than the sum of its proper divisors (31893817504).

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

17897249136 is a wasteful number, since it uses less digits than its factorization.

17897249136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28681513 (or 28681507 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The spelling of 17897249136 in words is "seventeen billion, eight hundred ninety-seven million, two hundred forty-nine thousand, one hundred thirty-six".