17730731242 has 32 divisors (see below), whose sum is σ = 31030387200. Its totient is φ = 7595325360.

The previous prime is 17730731237. The next prime is 17730731251. The reversal of 17730731242 is 24213703771.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1893492 + ... + 1902832.

It is an arithmetic number, because the mean of its divisors is an integer number (969699600).

Almost surely, 2^17730731242 is an apocalyptic number.

17730731242 is a deficient number, since it is larger than the sum of its proper divisors (13299655958).

17730731242 is an equidigital number, since it uses as much as digits as its factorization.

17730731242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12131 (or 12117 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 17730731242 in words is "seventeen billion, seven hundred thirty million, seven hundred thirty-one thousand, two hundred forty-two".