11406491892 has 18 divisors (see below), whose sum is σ = 28833076818. Its totient is φ = 3802163952.

The previous prime is 11406491861. The next prime is 11406491893. The reversal of 11406491892 is 29819460411.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7541880336 + 3864611556 = 86844^2 + 62166^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11406491893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158423463 + ... + 158423534.

It is an arithmetic number, because the mean of its divisors is an integer number (1601837601).

Almost surely, 2^11406491892 is an apocalyptic number.

11406491892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11406491892 is an abundant number, since it is smaller than the sum of its proper divisors (17426584926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11406491892 is a wasteful number, since it uses less digits than its factorization.

11406491892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316847007 (or 316847002 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 11406491892 in words is "eleven billion, four hundred six million, four hundred ninety-one thousand, eight hundred ninety-two".