1845913 has 2 divisors, whose sum is σ = 1845914. Its totient is φ = 1845912.

The previous prime is 1845901. The next prime is 1845919. The reversal of 1845913 is 3195481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1471369 + 374544 = 1213^2 + 612^2 .

It is a cyclic number.

It is not a de Polignac number, because 1845913 - 2⁵ = 1845881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1845919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922956 + 922957.

It is an arithmetic number, because the mean of its divisors is an integer number (922957).

2^1845913 is an apocalyptic number.

It is an amenable number.

1845913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1845913 is an equidigital number, since it uses as much as digits as its factorization.

1845913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 1845913 is about 1358.6438090979. The cubic root of 1845913 is about 122.6696358699.

The spelling of 1845913 in words is "one million, eight hundred forty-five thousand, nine hundred thirteen".