12090541849 has 9 divisors (see below), whose sum is σ = 12496663701. Its totient is φ = 11697225660.

The previous prime is 12090541847. The next prime is 12090541867. The reversal of 12090541849 is 94814509021.

The square root of 12090541849 is 109957.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 12090541849 - 2¹ = 12090541847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12090541847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3406894 + ... + 3410440.

It is an arithmetic number, because the mean of its divisors is an integer number (1388518189).

Almost surely, 2^12090541849 is an apocalyptic number.

12090541849 is the 109957-th square number.

12090541849 is the 54979-th centered octagonal number.

It is an amenable number.

12090541849 is a deficient number, since it is larger than the sum of its proper divisors (406121852).

12090541849 is an frugal number, since it uses more digits than its factorization.

12090541849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156 (or 3578 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 12090541849 in words is "twelve billion, ninety million, five hundred forty-one thousand, eight hundred forty-nine".