2051879699 has 2 divisors, whose sum is σ = 2051879700. Its totient is φ = 2051879698.

The previous prime is 2051879681. The next prime is 2051879723. The reversal of 2051879699 is 9969781502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2051879699 - 2⁸ = 2051879443 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2051879099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025939849 + 1025939850.

It is an arithmetic number, because the mean of its divisors is an integer number (1025939850).

Almost surely, 2^2051879699 is an apocalyptic number.

2051879699 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051879699 is an equidigital number, since it uses as much as digits as its factorization.

2051879699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The square root of 2051879699 is about 45297.6787374364. The cubic root of 2051879699 is about 1270.7222417593.

The spelling of 2051879699 in words is "two billion, fifty-one million, eight hundred seventy-nine thousand, six hundred ninety-nine".