1993316474 has 4 divisors (see below), whose sum is σ = 2989974714. Its totient is φ = 996658236.

The previous prime is 1993316473. The next prime is 1993316477. The reversal of 1993316474 is 4746133991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1949664025 + 43652449 = 44155^2 + 6607^2 .

It is not an unprimeable number, because it can be changed into a prime (1993316473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498329117 + ... + 498329120.

Almost surely, 2^1993316474 is an apocalyptic number.

1993316474 is a deficient number, since it is larger than the sum of its proper divisors (996658240).

1993316474 is an equidigital number, since it uses as much as digits as its factorization.

1993316474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996658239.

The product of its digits is 489888, while the sum is 47.

The square root of 1993316474 is about 44646.5729255897. The cubic root of 1993316474 is about 1258.5160311350.

The spelling of 1993316474 in words is "one billion, nine hundred ninety-three million, three hundred sixteen thousand, four hundred seventy-four".