2793986561 has 2 divisors, whose sum is σ = 2793986562. Its totient is φ = 2793986560.

The previous prime is 2793986543. The next prime is 2793986579. The reversal of 2793986561 is 1656893972.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2793986543) and next prime (2793986579).

It can be written as a sum of positive squares in only one way, i.e., 1416092161 + 1377894400 = 37631^2 + 37120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2793986561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2793986497 and 2793986506.

It is not a weakly prime, because it can be changed into another prime (2793986521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1396993280 + 1396993281.

It is an arithmetic number, because the mean of its divisors is an integer number (1396993281).

Almost surely, 2^2793986561 is an apocalyptic number.

It is an amenable number.

2793986561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2793986561 is an equidigital number, since it uses as much as digits as its factorization.

2793986561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The square root of 2793986561 is about 52858.1740225672. The cubic root of 2793986561 is about 1408.4500112833.

The spelling of 2793986561 in words is "two billion, seven hundred ninety-three million, nine hundred eighty-six thousand, five hundred sixty-one".