1845349477 has 2 divisors, whose sum is σ = 1845349478. Its totient is φ = 1845349476.

The previous prime is 1845349463. The next prime is 1845349537. The reversal of 1845349477 is 7749435481.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1760138116 + 85211361 = 41954^2 + 9231^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845349477 - 2⁷ = 1845349349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1845349417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922674738 + 922674739.

It is an arithmetic number, because the mean of its divisors is an integer number (922674739).

Almost surely, 2^1845349477 is an apocalyptic number.

It is an amenable number.

1845349477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845349477 is an equidigital number, since it uses as much as digits as its factorization.

1845349477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 52.

The square root of 1845349477 is about 42957.5310859458. The cubic root of 1845349477 is about 1226.5715167791.

The spelling of 1845349477 in words is "one billion, eight hundred forty-five million, three hundred forty-nine thousand, four hundred seventy-seven".