11861437 has 16 divisors (see below), whose sum is σ = 14303232. Its totient is φ = 9621360.

The previous prime is 11861429. The next prime is 11861441. The reversal of 11861437 is 73416811.

It is not a de Polignac number, because 11861437 - 2³ = 11861429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11861399 and 11861408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11861407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9618 + ... + 10780.

It is an arithmetic number, because the mean of its divisors is an integer number (893952).

Almost surely, 2^11861437 is an apocalyptic number.

It is an amenable number.

11861437 is a deficient number, since it is larger than the sum of its proper divisors (2441795).

11861437 is a wasteful number, since it uses less digits than its factorization.

11861437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248.

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

The square root of 11861437 is about 3444.0436989098. The cubic root of 11861437 is about 228.0582402260.

The spelling of 11861437 in words is "eleven million, eight hundred sixty-one thousand, four hundred thirty-seven".