263047138 has 8 divisors (see below), whose sum is σ = 395263440. Its totient is φ = 131292660.

The previous prime is 263047129. The next prime is 263047151. The reversal of 263047138 is 831740362.

It is a happy number.

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

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, 114028 + ... + 116311.

It is an arithmetic number, because the mean of its divisors is an integer number (49407930).

Almost surely, 2^263047138 is an apocalyptic number.

263047138 is a deficient number, since it is larger than the sum of its proper divisors (132216302).

263047138 is a wasteful number, since it uses less digits than its factorization.

263047138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230912.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 263047138 is about 16218.7280019119. The cubic root of 263047138 is about 640.7341331523.

The spelling of 263047138 in words is "two hundred sixty-three million, forty-seven thousand, one hundred thirty-eight".