1802826449 has 2 divisors, whose sum is σ = 1802826450. Its totient is φ = 1802826448.

The previous prime is 1802826437. The next prime is 1802826497. The reversal of 1802826449 is 9446282081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1802427025 + 399424 = 42455^2 + 632^2 .

It is an emirp because it is prime and its reverse (9446282081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1802826449 is a prime.

It is a super-3 number, since 3×1802826449³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1802826409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901413224 + 901413225.

It is an arithmetic number, because the mean of its divisors is an integer number (901413225).

Almost surely, 2^1802826449 is an apocalyptic number.

It is an amenable number.

1802826449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802826449 is an equidigital number, since it uses as much as digits as its factorization.

1802826449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1802826449 is about 42459.7038260985. The cubic root of 1802826449 is about 1217.0767710969.

The spelling of 1802826449 in words is "one billion, eight hundred two million, eight hundred twenty-six thousand, four hundred forty-nine".