3218492749 has 2 divisors, whose sum is σ = 3218492750. Its totient is φ = 3218492748.

The previous prime is 3218492737. The next prime is 3218492759. The reversal of 3218492749 is 9472948123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1750836649 + 1467656100 = 41843^2 + 38310^2 .

It is a cyclic number.

It is not a de Polignac number, because 3218492749 - 2¹¹ = 3218490701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3218492759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1609246374 + 1609246375.

It is an arithmetic number, because the mean of its divisors is an integer number (1609246375).

Almost surely, 2^3218492749 is an apocalyptic number.

It is an amenable number.

3218492749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3218492749 is an equidigital number, since it uses as much as digits as its factorization.

3218492749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 3218492749 is about 56731.7613775564. The cubic root of 3218492749 is about 1476.4458099942.

The spelling of 3218492749 in words is "three billion, two hundred eighteen million, four hundred ninety-two thousand, seven hundred forty-nine".