20162449 has 2 divisors, whose sum is σ = 20162450. Its totient is φ = 20162448.

The previous prime is 20162437. The next prime is 20162489. The reversal of 20162449 is 94426102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11937025 + 8225424 = 3455^2 + 2868^2 .

It is a cyclic number.

It is not a de Polignac number, because 20162449 - 2⁷ = 20162321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20162489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10081224 + 10081225.

It is an arithmetic number, because the mean of its divisors is an integer number (10081225).

Almost surely, 2^20162449 is an apocalyptic number.

It is an amenable number.

20162449 is a deficient number, since it is larger than the sum of its proper divisors (1).

20162449 is an equidigital number, since it uses as much as digits as its factorization.

20162449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20162449 is about 4490.2615736725. The cubic root of 20162449 is about 272.1747048411.

It can be divided in two parts, 2016 and 2449, that added together give a triangular number (4465 = T₉₄).

The spelling of 20162449 in words is "twenty million, one hundred sixty-two thousand, four hundred forty-nine".