263648451 has 16 divisors (see below), whose sum is σ = 384663168. Its totient is φ = 159297600.

The previous prime is 263648381. The next prime is 263648467. The reversal of 263648451 is 154846362.

It is not a de Polignac number, because 263648451 - 2¹⁰ = 263647427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263648851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1146 + ... + 22991.

It is an arithmetic number, because the mean of its divisors is an integer number (24041448).

Almost surely, 2^263648451 is an apocalyptic number.

263648451 is a deficient number, since it is larger than the sum of its proper divisors (121014717).

263648451 is a wasteful number, since it uses less digits than its factorization.

263648451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24482.

The product of its digits is 138240, while the sum is 39.

The square root of 263648451 is about 16237.2550327942. The cubic root of 263648451 is about 641.2219906525.

The spelling of 263648451 in words is "two hundred sixty-three million, six hundred forty-eight thousand, four hundred fifty-one".