1993465 has 4 divisors (see below), whose sum is σ = 2392164. Its totient is φ = 1594768.

The previous prime is 1993457. The next prime is 1993477. The reversal of 1993465 is 5643991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5643991 = 601 ⋅9391.

It can be written as a sum of positive squares in 2 ways, for example, as 385641 + 1607824 = 621^2 + 1268^2 .

It is a cyclic number.

It is not a de Polignac number, because 1993465 - 2³ = 1993457 is a prime.

It is a Duffinian number.

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, 199342 + ... + 199351.

It is an arithmetic number, because the mean of its divisors is an integer number (598041).

2^1993465 is an apocalyptic number.

It is an amenable number.

1993465 is a deficient number, since it is larger than the sum of its proper divisors (398699).

1993465 is an equidigital number, since it uses as much as digits as its factorization.

1993465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398698.

The product of its digits is 29160, while the sum is 37.

The square root of 1993465 is about 1411.9012005094. The cubic root of 1993465 is about 125.8547288541.

The spelling of 1993465 in words is "one million, nine hundred ninety-three thousand, four hundred sixty-five".