1648145 has 4 divisors (see below), whose sum is σ = 1977780. Its totient is φ = 1318512.

The previous prime is 1648081. The next prime is 1648181. The reversal of 1648145 is 5418461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1056784 + 591361 = 1028^2 + 769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648145 - 2⁶ = 1648081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164810 + ... + 164819.

It is an arithmetic number, because the mean of its divisors is an integer number (494445).

2^1648145 is an apocalyptic number.

It is an amenable number.

1648145 is a deficient number, since it is larger than the sum of its proper divisors (329635).

1648145 is an equidigital number, since it uses as much as digits as its factorization.

1648145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329634.

The product of its digits is 3840, while the sum is 29.

The square root of 1648145 is about 1283.8009970397. The cubic root of 1648145 is about 118.1222758160.

The spelling of 1648145 in words is "one million, six hundred forty-eight thousand, one hundred forty-five".