2794001681 has 2 divisors, whose sum is σ = 2794001682. Its totient is φ = 2794001680.

The previous prime is 2794001647. The next prime is 2794001713. The reversal of 2794001681 is 1861004972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2741569600 + 52432081 = 52360^2 + 7241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2794001681 is a prime.

It is a super-2 number, since 2×2794001681² = 15612890786861651522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2794001641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1397000840 + 1397000841.

It is an arithmetic number, because the mean of its divisors is an integer number (1397000841).

Almost surely, 2^2794001681 is an apocalyptic number.

It is an amenable number.

2794001681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2794001681 is an equidigital number, since it uses as much as digits as its factorization.

2794001681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 2794001681 is about 52858.3170466106. The cubic root of 2794001681 is about 1408.4525519452.

The spelling of 2794001681 in words is "two billion, seven hundred ninety-four million, one thousand, six hundred eighty-one".