253463638 has 8 divisors (see below), whose sum is σ = 380421288. Its totient is φ = 126656544.

The previous prime is 253463627. The next prime is 253463663. The reversal of 253463638 is 836364352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 253463638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33331 + ... + 40222.

It is an arithmetic number, because the mean of its divisors is an integer number (47552661).

Almost surely, 2^253463638 is an apocalyptic number.

253463638 is a deficient number, since it is larger than the sum of its proper divisors (126957650).

253463638 is a wasteful number, since it uses less digits than its factorization.

253463638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75278.

The product of its digits is 311040, while the sum is 40.

The square root of 253463638 is about 15920.5413852670. The cubic root of 253463638 is about 632.8564654711.

The spelling of 253463638 in words is "two hundred fifty-three million, four hundred sixty-three thousand, six hundred thirty-eight".