2790981653 has 2 divisors, whose sum is σ = 2790981654. Its totient is φ = 2790981652.

The previous prime is 2790981637. The next prime is 2790981659. The reversal of 2790981653 is 3561890972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2586434449 + 204547204 = 50857^2 + 14302^2 .

It is a cyclic number.

It is not a de Polignac number, because 2790981653 - 2⁴ = 2790981637 is a prime.

It is a super-2 number, since 2×2790981653² = 15579157174765224818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2790981659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395490826 + 1395490827.

It is an arithmetic number, because the mean of its divisors is an integer number (1395490827).

Almost surely, 2^2790981653 is an apocalyptic number.

It is an amenable number.

2790981653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2790981653 is an equidigital number, since it uses as much as digits as its factorization.

2790981653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 2790981653 is about 52829.7421250568. The cubic root of 2790981653 is about 1407.9449049564.

The spelling of 2790981653 in words is "two billion, seven hundred ninety million, nine hundred eighty-one thousand, six hundred fifty-three".