1845162493 has 2 divisors, whose sum is σ = 1845162494. Its totient is φ = 1845162492.

The previous prime is 1845162491. The next prime is 1845162499. The reversal of 1845162493 is 3942615481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1539542169 + 305620324 = 39237^2 + 17482^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845162493 - 2¹ = 1845162491 is a prime.

Together with 1845162491, 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 (1845162491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922581246 + 922581247.

It is an arithmetic number, because the mean of its divisors is an integer number (922581247).

Almost surely, 2^1845162493 is an apocalyptic number.

It is an amenable number.

1845162493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845162493 is an equidigital number, since it uses as much as digits as its factorization.

1845162493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 1845162493 is about 42955.3546487513. The cubic root of 1845162493 is about 1226.5300870485.

The spelling of 1845162493 in words is "one billion, eight hundred forty-five million, one hundred sixty-two thousand, four hundred ninety-three".