254130638 has 4 divisors (see below), whose sum is σ = 381195960. Its totient is φ = 127065318.

The previous prime is 254130629. The next prime is 254130649. The reversal of 254130638 is 836031452.

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

It is a Curzon number.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 63532658 + ... + 63532661.

It is an arithmetic number, because the mean of its divisors is an integer number (95298990).

Almost surely, 2^254130638 is an apocalyptic number.

254130638 is a deficient number, since it is larger than the sum of its proper divisors (127065322).

254130638 is a wasteful number, since it uses less digits than its factorization.

254130638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127065321.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 254130638 is about 15941.4754022330. The cubic root of 254130638 is about 633.4111085157.

The spelling of 254130638 in words is "two hundred fifty-four million, one hundred thirty thousand, six hundred thirty-eight".