2145229461 has 8 divisors (see below), whose sum is σ = 3178117760. Its totient is φ = 1430152956.

The previous prime is 2145229453. The next prime is 2145229469. The reversal of 2145229461 is 1649225412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2145229453) and next prime (2145229469).

It is not a de Polignac number, because 2145229461 - 2³ = 2145229453 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 (2145229469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39726445 + ... + 39726498.

It is an arithmetic number, because the mean of its divisors is an integer number (397264720).

Almost surely, 2^2145229461 is an apocalyptic number.

It is an amenable number.

2145229461 is a deficient number, since it is larger than the sum of its proper divisors (1032888299).

2145229461 is an equidigital number, since it uses as much as digits as its factorization.

2145229461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79452952 (or 79452946 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2145229461 is about 46316.6218651577. The cubic root of 2145229461 is about 1289.7075756853.

The spelling of 2145229461 in words is "two billion, one hundred forty-five million, two hundred twenty-nine thousand, four hundred sixty-one".