16001263 has 4 divisors (see below), whose sum is σ = 16116520. Its totient is φ = 15886008.

The previous prime is 16001231. The next prime is 16001269. The reversal of 16001263 is 36210061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36210061 = 5009 ⋅7229.

It is a cyclic number.

It is not a de Polignac number, because 16001263 - 2⁵ = 16001231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16001263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16001269) 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, 57420 + ... + 57697.

It is an arithmetic number, because the mean of its divisors is an integer number (4029130).

Almost surely, 2^16001263 is an apocalyptic number.

16001263 is a deficient number, since it is larger than the sum of its proper divisors (115257).

16001263 is a wasteful number, since it uses less digits than its factorization.

16001263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115256.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 16001263 is about 4000.1578718846. The cubic root of 16001263 is about 251.9908401390.

The spelling of 16001263 in words is "sixteen million, one thousand, two hundred sixty-three".