6348091994 has 4 divisors (see below), whose sum is σ = 9522137994. Its totient is φ = 3174045996.

The previous prime is 6348091993. The next prime is 6348092089. The reversal of 6348091994 is 4991908436.

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., 4899300025 + 1448791969 = 69995^2 + 38063^2 .

It is not an unprimeable number, because it can be changed into a prime (6348091993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1587022997 + ... + 1587023000.

Almost surely, 2^6348091994 is an apocalyptic number.

6348091994 is a deficient number, since it is larger than the sum of its proper divisors (3174046000).

6348091994 is a wasteful number, since it uses less digits than its factorization.

6348091994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174045999.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The square root of 6348091994 is about 79674.9144586927. The cubic root of 6348091994 is about 1851.6024094533.

The spelling of 6348091994 in words is "six billion, three hundred forty-eight million, ninety-one thousand, nine hundred ninety-four".