1836264649 has 2 divisors, whose sum is σ = 1836264650. Its totient is φ = 1836264648.

The previous prime is 1836264637. The next prime is 1836264691. The reversal of 1836264649 is 9464626381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1236014649 + 600250000 = 35157^2 + 24500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1836264649 - 2¹¹ = 1836262601 is a prime.

It is a super-2 number, since 2×1836264649² = 6743735722334186402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1836264049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918132324 + 918132325.

It is an arithmetic number, because the mean of its divisors is an integer number (918132325).

Almost surely, 2^1836264649 is an apocalyptic number.

It is an amenable number.

1836264649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836264649 is an equidigital number, since it uses as much as digits as its factorization.

1836264649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 49.

The square root of 1836264649 is about 42851.6586493452. The cubic root of 1836264649 is about 1224.5553624948. Note that the first 3 decimals are identical.

The spelling of 1836264649 in words is "one billion, eight hundred thirty-six million, two hundred sixty-four thousand, six hundred forty-nine".