268493938 has 4 divisors (see below), whose sum is σ = 402740910. Its totient is φ = 134246968.

The previous prime is 268493933. The next prime is 268493957. The reversal of 268493938 is 839394862.

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., 158180929 + 110313009 = 12577^2 + 10503^2 .

It is not an unprimeable number, because it can be changed into a prime (268493933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67123483 + ... + 67123486.

Almost surely, 2^268493938 is an apocalyptic number.

268493938 is a deficient number, since it is larger than the sum of its proper divisors (134246972).

268493938 is a wasteful number, since it uses less digits than its factorization.

268493938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134246971.

The product of its digits is 2239488, while the sum is 52.

The square root of 268493938 is about 16385.7846318081. The cubic root of 268493938 is about 645.1264203454.

The spelling of 268493938 in words is "two hundred sixty-eight million, four hundred ninety-three thousand, nine hundred thirty-eight".