1993247386 has 16 divisors (see below), whose sum is σ = 3274437600. Its totient is φ = 904367088.

The previous prime is 1993247359. The next prime is 1993247411. The reversal of 1993247386 is 6837423991.

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 7 ways as a sum of consecutive naturals, for example, 648156 + ... + 651223.

It is an arithmetic number, because the mean of its divisors is an integer number (204652350).

Almost surely, 2^1993247386 is an apocalyptic number.

1993247386 is a deficient number, since it is larger than the sum of its proper divisors (1281190214).

1993247386 is a wasteful number, since it uses less digits than its factorization.

1993247386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299453.

The product of its digits is 1959552, while the sum is 52.

The square root of 1993247386 is about 44645.7991976849. The cubic root of 1993247386 is about 1258.5014909852.

The spelling of 1993247386 in words is "one billion, nine hundred ninety-three million, two hundred forty-seven thousand, three hundred eighty-six".