1800650053 has 2 divisors, whose sum is σ = 1800650054. Its totient is φ = 1800650052.

The previous prime is 1800650051. The next prime is 1800650167. The reversal of 1800650053 is 3500560081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1352989089 + 447660964 = 36783^2 + 21158^2 .

It is a cyclic number.

It is not a de Polignac number, because 1800650053 - 2¹ = 1800650051 is a prime.

It is a super-2 number, since 2×1800650053² = 6484681226737805618, which contains 22 as substring.

Together with 1800650051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1800650051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900325026 + 900325027.

It is an arithmetic number, because the mean of its divisors is an integer number (900325027).

Almost surely, 2^1800650053 is an apocalyptic number.

It is an amenable number.

1800650053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800650053 is an equidigital number, since it uses as much as digits as its factorization.

1800650053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1800650053 is about 42434.0671277218. The cubic root of 1800650053 is about 1216.5868168108.

The spelling of 1800650053 in words is "one billion, eight hundred million, six hundred fifty thousand, fifty-three".