11890492894 has 16 divisors (see below), whose sum is σ = 20385122688. Its totient is φ = 5095570392.

The previous prime is 11890492879. The next prime is 11890492927. The reversal of 11890492894 is 49829409811.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324829 + ... + 359575.

It is an arithmetic number, because the mean of its divisors is an integer number (1274070168).

Almost surely, 2^11890492894 is an apocalyptic number.

11890492894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11890492894 is a deficient number, since it is larger than the sum of its proper divisors (8494629794).

11890492894 is a wasteful number, since it uses less digits than its factorization.

11890492894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59199.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 11890492894 in words is "eleven billion, eight hundred ninety million, four hundred ninety-two thousand, eight hundred ninety-four".