1849252091 has 2 divisors, whose sum is σ = 1849252092. Its totient is φ = 1849252090.

The previous prime is 1849252087. The next prime is 1849252099. The reversal of 1849252091 is 1902529481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1849252091 - 2² = 1849252087 is a prime.

It is not a weakly prime, because it can be changed into another prime (1849252099) 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, 924626045 + 924626046.

It is an arithmetic number, because the mean of its divisors is an integer number (924626046).

Almost surely, 2^1849252091 is an apocalyptic number.

1849252091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1849252091 is an equidigital number, since it uses as much as digits as its factorization.

1849252091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 1849252091 is about 43002.9311907921. The cubic root of 1849252091 is about 1227.4355743705.

The spelling of 1849252091 in words is "one billion, eight hundred forty-nine million, two hundred fifty-two thousand, ninety-one".