1841090249 has 2 divisors, whose sum is σ = 1841090250. Its totient is φ = 1841090248.

The previous prime is 1841090243. The next prime is 1841090299. The reversal of 1841090249 is 9420901481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1229764624 + 611325625 = 35068^2 + 24725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1841090249 - 2¹² = 1841086153 is a prime.

It is a super-2 number, since 2×1841090249² = 6779226609925764002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1841090243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920545124 + 920545125.

It is an arithmetic number, because the mean of its divisors is an integer number (920545125).

Almost surely, 2^1841090249 is an apocalyptic number.

It is an amenable number.

1841090249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1841090249 is an equidigital number, since it uses as much as digits as its factorization.

1841090249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1841090249 is about 42907.9275775468. The cubic root of 1841090249 is about 1225.6271117011.

The spelling of 1841090249 in words is "one billion, eight hundred forty-one million, ninety thousand, two hundred forty-nine".