2570019649 has 4 divisors (see below), whose sum is σ = 2575129536. Its totient is φ = 2564909764.

The previous prime is 2570019637. The next prime is 2570019689. The reversal of 2570019649 is 9469100752.

It is a happy number.

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 2570019649 - 2¹⁷ = 2569888577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2570019619) 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, 2554189 + ... + 2555194.

It is an arithmetic number, because the mean of its divisors is an integer number (643782384).

Almost surely, 2^2570019649 is an apocalyptic number.

It is an amenable number.

2570019649 is a deficient number, since it is larger than the sum of its proper divisors (5109887).

2570019649 is an equidigital number, since it uses as much as digits as its factorization.

2570019649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109886.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 2570019649 is about 50695.3612177682. The cubic root of 2570019649 is about 1369.7631588378.

The spelling of 2570019649 in words is "two billion, five hundred seventy million, nineteen thousand, six hundred forty-nine".