1849236481 has 4 divisors (see below), whose sum is σ = 1849630464. Its totient is φ = 1848842500.

The previous prime is 1849236463. The next prime is 1849236491. The reversal of 1849236481 is 1846329481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1846329481 = 10253 ⋅180077.

It is a cyclic number.

It is not a de Polignac number, because 1849236481 - 2¹⁷ = 1849105409 is a prime.

It is a super-2 number, since 2×1849236481² = 6839351125322526722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1849236451) 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 in 3 ways as a sum of consecutive naturals, for example, 189865 + ... + 199366.

It is an arithmetic number, because the mean of its divisors is an integer number (462407616).

Almost surely, 2^1849236481 is an apocalyptic number.

It is an amenable number.

1849236481 is a deficient number, since it is larger than the sum of its proper divisors (393983).

1849236481 is an equidigital number, since it uses as much as digits as its factorization.

1849236481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393982.

The product of its digits is 331776, while the sum is 46.

The square root of 1849236481 is about 43002.7496911535. The cubic root of 1849236481 is about 1227.4321206638.

The spelling of 1849236481 in words is "one billion, eight hundred forty-nine million, two hundred thirty-six thousand, four hundred eighty-one".