11800137 has 4 divisors (see below), whose sum is σ = 15733520. Its totient is φ = 7866756.

The previous prime is 11800123. The next prime is 11800163. The reversal of 11800137 is 73100811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11800137 - 2⁶ = 11800073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11800037) 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, 1966687 + ... + 1966692.

It is an arithmetic number, because the mean of its divisors is an integer number (3933380).

Almost surely, 2^11800137 is an apocalyptic number.

It is an amenable number.

11800137 is a deficient number, since it is larger than the sum of its proper divisors (3933383).

11800137 is an equidigital number, since it uses as much as digits as its factorization.

11800137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933382.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 11800137 is about 3435.1327485266. The cubic root of 11800137 is about 227.6646925647.

Adding to 11800137 its reverse (73100811), we get a palindrome (84900948).

The spelling of 11800137 in words is "eleven million, eight hundred thousand, one hundred thirty-seven".