2051342709 has 32 divisors (see below), whose sum is σ = 3066970368. Its totient is φ = 1211328000.

The previous prime is 2051342639. The next prime is 2051342717. The reversal of 2051342709 is 9072431502.

It is not a de Polignac number, because 2051342709 - 2⁸ = 2051342453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2051342709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051342719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87024 + ... + 108054.

It is an arithmetic number, because the mean of its divisors is an integer number (95842824).

Almost surely, 2^2051342709 is an apocalyptic number.

It is an amenable number.

2051342709 is a deficient number, since it is larger than the sum of its proper divisors (1015627659).

2051342709 is a wasteful number, since it uses less digits than its factorization.

2051342709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21149.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2051342709 is about 45291.7510039080. The cubic root of 2051342709 is about 1270.6113800501.

The spelling of 2051342709 in words is "two billion, fifty-one million, three hundred forty-two thousand, seven hundred nine".