11894397487 has 16 divisors (see below), whose sum is σ = 13637894400. Its totient is φ = 10162027008.

The previous prime is 11894397433. The next prime is 11894397521. The reversal of 11894397487 is 78479349811.

It is not a de Polignac number, because 11894397487 - 2²⁷ = 11760179759 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 (11894397787) 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, 5866968 + ... + 5868994.

It is an arithmetic number, because the mean of its divisors is an integer number (852368400).

Almost surely, 2^11894397487 is an apocalyptic number.

11894397487 is a deficient number, since it is larger than the sum of its proper divisors (1743496913).

11894397487 is a wasteful number, since it uses less digits than its factorization.

11894397487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350.

The product of its digits is 12192768, while the sum is 61.

The spelling of 11894397487 in words is "eleven billion, eight hundred ninety-four million, three hundred ninety-seven thousand, four hundred eighty-seven".