254945138 has 12 divisors (see below), whose sum is σ = 444853422. Its totient is φ = 109262160.

The previous prime is 254945129. The next prime is 254945153. The reversal of 254945138 is 831549452.

It can be written as a sum of positive squares in only one way, i.e., 254945089 + 49 = 15967^2 + 7^2 .

It is a junction number, because it is equal to n+sod(n) for n = 254945095 and 254945104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1300643 + ... + 1300838.

Almost surely, 2^254945138 is an apocalyptic number.

254945138 is a deficient number, since it is larger than the sum of its proper divisors (189908284).

254945138 is a wasteful number, since it uses less digits than its factorization.

254945138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601497 (or 2601490 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 254945138 is about 15967.0015344147. The cubic root of 254945138 is about 634.0870904387.

The spelling of 254945138 in words is "two hundred fifty-four million, nine hundred forty-five thousand, one hundred thirty-eight".