2738861 has 2 divisors, whose sum is σ = 2738862. Its totient is φ = 2738860.

The previous prime is 2738821. The next prime is 2738899. The reversal of 2738861 is 1688372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2540836 + 198025 = 1594^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 2738861 - 2¹⁴ = 2722477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2738821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1369430 + 1369431.

It is an arithmetic number, because the mean of its divisors is an integer number (1369431).

2^2738861 is an apocalyptic number.

It is an amenable number.

2738861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2738861 is an equidigital number, since it uses as much as digits as its factorization.

2738861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 2738861 is about 1654.9504524305. The cubic root of 2738861 is about 139.9125474240.

The spelling of 2738861 in words is "two million, seven hundred thirty-eight thousand, eight hundred sixty-one".