1845490253 has 2 divisors, whose sum is σ = 1845490254. Its totient is φ = 1845490252.

The previous prime is 1845490219. The next prime is 1845490271. The reversal of 1845490253 is 3520945481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1845389764 + 100489 = 42958^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845490253 - 2¹⁶ = 1845424717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1845490253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1845490553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922745126 + 922745127.

It is an arithmetic number, because the mean of its divisors is an integer number (922745127).

Almost surely, 2^1845490253 is an apocalyptic number.

It is an amenable number.

1845490253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845490253 is an equidigital number, since it uses as much as digits as its factorization.

1845490253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 1845490253 is about 42959.1696032407. The cubic root of 1845490253 is about 1226.6027064342.

The spelling of 1845490253 in words is "one billion, eight hundred forty-five million, four hundred ninety thousand, two hundred fifty-three".