265238378 has 4 divisors (see below), whose sum is σ = 397857570. Its totient is φ = 132619188.

The previous prime is 265238371. The next prime is 265238383. The reversal of 265238378 is 873832562.

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., 230037889 + 35200489 = 15167^2 + 5933^2 .

It is not an unprimeable number, because it can be changed into a prime (265238371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66309593 + ... + 66309596.

Almost surely, 2^265238378 is an apocalyptic number.

265238378 is a deficient number, since it is larger than the sum of its proper divisors (132619192).

265238378 is a wasteful number, since it uses less digits than its factorization.

265238378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132619191.

The product of its digits is 483840, while the sum is 44.

The square root of 265238378 is about 16286.1406723631. The cubic root of 265238378 is about 642.5083673152.

The spelling of 265238378 in words is "two hundred sixty-five million, two hundred thirty-eight thousand, three hundred seventy-eight".