3640973441 has 4 divisors (see below), whose sum is σ = 4161112512. Its totient is φ = 3120834372.

The previous prime is 3640973411. The next prime is 3640973447. The reversal of 3640973441 is 1443790463.

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 3640973441 - 2⁶ = 3640973377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640973447) 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, 260069525 + ... + 260069538.

It is an arithmetic number, because the mean of its divisors is an integer number (1040278128).

Almost surely, 2^3640973441 is an apocalyptic number.

It is an amenable number.

3640973441 is a deficient number, since it is larger than the sum of its proper divisors (520139071).

3640973441 is an equidigital number, since it uses as much as digits as its factorization.

3640973441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520139070.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 3640973441 is about 60340.4792904398. The cubic root of 3640973441 is about 1538.4114502845.

The spelling of 3640973441 in words is "three billion, six hundred forty million, nine hundred seventy-three thousand, four hundred forty-one".