2051047649 has 16 divisors (see below), whose sum is σ = 2426457600. Its totient is φ = 1696317504.

The previous prime is 2051047643. The next prime is 2051047657. The reversal of 2051047649 is 9467401502.

It is not a de Polignac number, because 2051047649 - 2⁴ = 2051047633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2051047643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500792 + ... + 504870.

It is an arithmetic number, because the mean of its divisors is an integer number (151653600).

Almost surely, 2^2051047649 is an apocalyptic number.

2051047649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2051047649 is a deficient number, since it is larger than the sum of its proper divisors (375409951).

2051047649 is a wasteful number, since it uses less digits than its factorization.

2051047649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6592.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2051047649 is about 45288.4935607269. The cubic root of 2051047649 is about 1270.5504566090.

The spelling of 2051047649 in words is "two billion, fifty-one million, forty-seven thousand, six hundred forty-nine".