11291863 has 8 divisors (see below), whose sum is σ = 12344976. Its totient is φ = 10243200.

The previous prime is 11291849. The next prime is 11291869. The reversal of 11291863 is 36819211.

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

It is not a de Polignac number, because 11291863 - 2⁵ = 11291831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11291869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6495 + ... + 8047.

It is an arithmetic number, because the mean of its divisors is an integer number (1543122).

Almost surely, 2^11291863 is an apocalyptic number.

11291863 is a deficient number, since it is larger than the sum of its proper divisors (1053113).

11291863 is a wasteful number, since it uses less digits than its factorization.

11291863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225.

The product of its digits is 2592, while the sum is 31.

The square root of 11291863 is about 3360.3367390784. The cubic root of 11291863 is about 224.3478266971.

It can be divided in two parts, 1129 and 1863, that added together give a palindrome (2992).

The spelling of 11291863 in words is "eleven million, two hundred ninety-one thousand, eight hundred sixty-three".