2651698813 has 2 divisors, whose sum is σ = 2651698814. Its totient is φ = 2651698812.

The previous prime is 2651698807. The next prime is 2651698871. The reversal of 2651698813 is 3188961562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2611414404 + 40284409 = 51102^2 + 6347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2651698813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2651698873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325849406 + 1325849407.

It is an arithmetic number, because the mean of its divisors is an integer number (1325849407).

Almost surely, 2^2651698813 is an apocalyptic number.

It is an amenable number.

2651698813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2651698813 is an equidigital number, since it uses as much as digits as its factorization.

2651698813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The square root of 2651698813 is about 51494.6483918475. The cubic root of 2651698813 is about 1384.1231466611.

The spelling of 2651698813 in words is "two billion, six hundred fifty-one million, six hundred ninety-eight thousand, eight hundred thirteen".