3641579849 has 4 divisors (see below), whose sum is σ = 3740000964. Its totient is φ = 3543158736.

The previous prime is 3641579819. The next prime is 3641579863. The reversal of 3641579849 is 9489751463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2097640000 + 1543939849 = 45800^2 + 39293^2 .

It is a cyclic number.

It is not a de Polignac number, because 3641579849 - 2⁸ = 3641579593 is a prime.

It is a super-2 number, since 2×3641579849² = 26522207593285725602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3641579794 and 3641579803.

It is not an unprimeable number, because it can be changed into a prime (3641579819) 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, 49210502 + ... + 49210575.

It is an arithmetic number, because the mean of its divisors is an integer number (935000241).

Almost surely, 2^3641579849 is an apocalyptic number.

It is an amenable number.

3641579849 is a deficient number, since it is larger than the sum of its proper divisors (98421115).

3641579849 is an equidigital number, since it uses as much as digits as its factorization.

3641579849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98421114.

The product of its digits is 6531840, while the sum is 56.

The square root of 3641579849 is about 60345.5039667414. The cubic root of 3641579849 is about 1538.4968535645.

The spelling of 3641579849 in words is "three billion, six hundred forty-one million, five hundred seventy-nine thousand, eight hundred forty-nine".