1813449297 has 16 divisors (see below), whose sum is σ = 2680989120. Its totient is φ = 1081041600.

The previous prime is 1813449293. The next prime is 1813449331. The reversal of 1813449297 is 7929443181.

It is not a de Polignac number, because 1813449297 - 2² = 1813449293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1813449293) 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 15 ways as a sum of consecutive naturals, for example, 448422 + ... + 452447.

It is an arithmetic number, because the mean of its divisors is an integer number (167561820).

Almost surely, 2^1813449297 is an apocalyptic number.

It is an amenable number.

1813449297 is a deficient number, since it is larger than the sum of its proper divisors (867539823).

1813449297 is a wasteful number, since it uses less digits than its factorization.

1813449297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900944.

The product of its digits is 435456, while the sum is 48.

The square root of 1813449297 is about 42584.6133832397. The cubic root of 1813449297 is about 1219.4625638291.

The spelling of 1813449297 in words is "one billion, eight hundred thirteen million, four hundred forty-nine thousand, two hundred ninety-seven".