2005973649 has 12 divisors (see below), whose sum is σ = 2898303616. Its totient is φ = 1336952952.

The previous prime is 2005973647. The next prime is 2005973663. The reversal of 2005973649 is 9463795002.

It is a happy number.

2005973649 is a `hidden beast` number, since 20 + 0 + 597 + 36 + 4 + 9 = 666.

It is not a de Polignac number, because 2005973649 - 2¹ = 2005973647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005973647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7224 + ... + 63750.

Almost surely, 2^2005973649 is an apocalyptic number.

It is an amenable number.

2005973649 is a deficient number, since it is larger than the sum of its proper divisors (892329967).

2005973649 is a wasteful number, since it uses less digits than its factorization.

2005973649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60476 (or 60473 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 2005973649 is about 44788.0971799428. The cubic root of 2005973649 is about 1261.1741907711.

The spelling of 2005973649 in words is "two billion, five million, nine hundred seventy-three thousand, six hundred forty-nine".