3641257249 has 4 divisors (see below), whose sum is σ = 4161436864. Its totient is φ = 3121077636.

The previous prime is 3641257247. The next prime is 3641257253. The reversal of 3641257249 is 9427521463.

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 a cyclic number.

It is not a de Polignac number, because 3641257249 - 2¹ = 3641257247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3641257247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260089797 + ... + 260089810.

It is an arithmetic number, because the mean of its divisors is an integer number (1040359216).

Almost surely, 2^3641257249 is an apocalyptic number.

It is an amenable number.

3641257249 is a deficient number, since it is larger than the sum of its proper divisors (520179615).

3641257249 is an equidigital number, since it uses as much as digits as its factorization.

3641257249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520179614.

The product of its digits is 362880, while the sum is 43.

The square root of 3641257249 is about 60342.8309660725. The cubic root of 3641257249 is about 1538.4514214753.

The spelling of 3641257249 in words is "three billion, six hundred forty-one million, two hundred fifty-seven thousand, two hundred forty-nine".