263790145 has 4 divisors (see below), whose sum is σ = 316548180. Its totient is φ = 211032112.

The previous prime is 263790143. The next prime is 263790161. The reversal of 263790145 is 541097362.

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

It can be written as a sum of positive squares in 2 ways, for example, as 132733441 + 131056704 = 11521^2 + 11448^2 .

It is a cyclic number.

It is not a de Polignac number, because 263790145 - 2¹ = 263790143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263790143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26379010 + ... + 26379019.

It is an arithmetic number, because the mean of its divisors is an integer number (79137045).

Almost surely, 2^263790145 is an apocalyptic number.

It is an amenable number.

263790145 is a deficient number, since it is larger than the sum of its proper divisors (52758035).

263790145 is an equidigital number, since it uses as much as digits as its factorization.

263790145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52758034.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 263790145 is about 16241.6176842087. The cubic root of 263790145 is about 641.3368418703.

The spelling of 263790145 in words is "two hundred sixty-three million, seven hundred ninety thousand, one hundred forty-five".