1813075049 has 2 divisors, whose sum is σ = 1813075050. Its totient is φ = 1813075048.

The previous prime is 1813075031. The next prime is 1813075051. The reversal of 1813075049 is 9405703181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1775779600 + 37295449 = 42140^2 + 6107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1813075049 is a prime.

It is a super-2 number, since 2×1813075049² = 6574482266612704802, which contains 22 as substring.

Together with 1813075051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1813075549) 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 as a sum of consecutive naturals, namely, 906537524 + 906537525.

It is an arithmetic number, because the mean of its divisors is an integer number (906537525).

Almost surely, 2^1813075049 is an apocalyptic number.

It is an amenable number.

1813075049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1813075049 is an equidigital number, since it uses as much as digits as its factorization.

1813075049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1813075049 is about 42580.2189872246. The cubic root of 1813075049 is about 1219.3786697779.

The spelling of 1813075049 in words is "one billion, eight hundred thirteen million, seventy-five thousand, forty-nine".