263972013 has 8 divisors (see below), whose sum is σ = 353541888. Its totient is φ = 175191744.

The previous prime is 263972003. The next prime is 263972041. The reversal of 263972013 is 310279362.

It is a happy number.

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

It is not a de Polignac number, because 263972013 - 2¹² = 263967917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263972003) 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 in 7 ways as a sum of consecutive naturals, for example, 196620 + ... + 197957.

It is an arithmetic number, because the mean of its divisors is an integer number (44192736).

Almost surely, 2^263972013 is an apocalyptic number.

It is an amenable number.

263972013 is a deficient number, since it is larger than the sum of its proper divisors (89569875).

263972013 is a wasteful number, since it uses less digits than its factorization.

263972013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394803.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 263972013 is about 16247.2155460559. The cubic root of 263972013 is about 641.4841961922.

The spelling of 263972013 in words is "two hundred sixty-three million, nine hundred seventy-two thousand, thirteen".