1805953229 has 2 divisors, whose sum is σ = 1805953230. Its totient is φ = 1805953228.

The previous prime is 1805953223. The next prime is 1805953277. The reversal of 1805953229 is 9223595081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 918211204 + 887742025 = 30302^2 + 29795^2 .

It is an emirp because it is prime and its reverse (9223595081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1805953229 - 2⁴ = 1805953213 is a prime.

It is a super-2 number, since 2×1805953229² = 6522934130671052882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1805953229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1805953223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902976614 + 902976615.

It is an arithmetic number, because the mean of its divisors is an integer number (902976615).

Almost surely, 2^1805953229 is an apocalyptic number.

It is an amenable number.

1805953229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1805953229 is an equidigital number, since it uses as much as digits as its factorization.

1805953229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 1805953229 is about 42496.5084330466. The cubic root of 1805953229 is about 1217.7799878617.

The spelling of 1805953229 in words is "one billion, eight hundred five million, nine hundred fifty-three thousand, two hundred twenty-nine".