1618601 has 2 divisors, whose sum is σ = 1618602. Its totient is φ = 1618600.

The previous prime is 1618559. The next prime is 1618613. The reversal of 1618601 is 1068161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1048576 + 570025 = 1024^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618601 - 2⁶ = 1618537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1618681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809300 + 809301.

It is an arithmetic number, because the mean of its divisors is an integer number (809301).

2^1618601 is an apocalyptic number.

It is an amenable number.

1618601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618601 is an equidigital number, since it uses as much as digits as its factorization.

1618601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1618601 is about 1272.2425083293. The cubic root of 1618601 is about 117.4122114748.

The spelling of 1618601 in words is "one million, six hundred eighteen thousand, six hundred one".