11889238291 has 8 divisors (see below), whose sum is σ = 13619979104. Its totient is φ = 10166567040.

The previous prime is 11889238289. The next prime is 11889238307. The reversal of 11889238291 is 19283298811.

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

It is not a de Polignac number, because 11889238291 - 2¹ = 11889238289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11889238241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2014230 + ... + 2020123.

It is an arithmetic number, because the mean of its divisors is an integer number (1702497388).

Almost surely, 2^11889238291 is an apocalyptic number.

11889238291 is a deficient number, since it is larger than the sum of its proper divisors (1730740813).

11889238291 is an equidigital number, since it uses as much as digits as its factorization.

11889238291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034781.

The product of its digits is 497664, while the sum is 52.

The spelling of 11889238291 in words is "eleven billion, eight hundred eighty-nine million, two hundred thirty-eight thousand, two hundred ninety-one".