11437861 has 4 divisors (see below), whose sum is σ = 11832300. Its totient is φ = 11043424.

The previous prime is 11437837. The next prime is 11437879. The reversal of 11437861 is 16873411.

11437861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16873411 = 193 ⋅87427.

It can be written as a sum of positive squares in 2 ways, for example, as 9796900 + 1640961 = 3130^2 + 1281^2 .

It is a cyclic number.

It is not a de Polignac number, because 11437861 - 2⁷ = 11437733 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 (11437801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197176 + ... + 197233.

It is an arithmetic number, because the mean of its divisors is an integer number (2958075).

Almost surely, 2^11437861 is an apocalyptic number.

It is an amenable number.

11437861 is a deficient number, since it is larger than the sum of its proper divisors (394439).

11437861 is an equidigital number, since it uses as much as digits as its factorization.

11437861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394438.

The product of its digits is 4032, while the sum is 31.

The square root of 11437861 is about 3381.9906859718. The cubic root of 11437861 is about 225.3105899943.

The spelling of 11437861 in words is "eleven million, four hundred thirty-seven thousand, eight hundred sixty-one".