250309138 has 16 divisors (see below), whose sum is σ = 394657920. Its totient is φ = 118836256.

The previous prime is 250309133. The next prime is 250309153. The reversal of 250309138 is 831903052.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (250309133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13558 + ... + 26161.

It is an arithmetic number, because the mean of its divisors is an integer number (24666120).

Almost surely, 2^250309138 is an apocalyptic number.

250309138 is a deficient number, since it is larger than the sum of its proper divisors (144348782).

250309138 is a wasteful number, since it uses less digits than its factorization.

250309138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39881.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 250309138 is about 15821.1610825502. The cubic root of 250309138 is about 630.2200776424.

The spelling of 250309138 in words is "two hundred fifty million, three hundred nine thousand, one hundred thirty-eight".