2061432409 has 3 divisors (see below), whose sum is σ = 2061477813. Its totient is φ = 2061387006.

The previous prime is 2061432397. The next prime is 2061432413. The reversal of 2061432409 is 9042341602.

It is a happy number.

The square root of 2061432409 is 45403.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2061432409 - 2¹³ = 2061424217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061432449) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 22702 + ... + 68104.

It is an arithmetic number, because the mean of its divisors is an integer number (687159271).

Almost surely, 2^2061432409 is an apocalyptic number.

2061432409 is the 45403-rd square number.

2061432409 is the 22702-nd centered octagonal number.

It is an amenable number.

2061432409 is a deficient number, since it is larger than the sum of its proper divisors (45404).

2061432409 is an frugal number, since it uses more digits than its factorization.

2061432409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90806 (or 45403 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The cubic root of 2061432409 is about 1272.6911765240.

The spelling of 2061432409 in words is "two billion, sixty-one million, four hundred thirty-two thousand, four hundred nine".