1948665 has 16 divisors (see below), whose sum is σ = 3140928. Its totient is φ = 1031616.

The previous prime is 1948649. The next prime is 1948669. The reversal of 1948665 is 5668491.

It is not a de Polignac number, because 1948665 - 2⁴ = 1948649 is a prime.

It is a Curzon number.

1948665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1948669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2047 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (196308).

2^1948665 is an apocalyptic number.

1948665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1948665 is a deficient number, since it is larger than the sum of its proper divisors (1192263).

1948665 is a wasteful number, since it uses less digits than its factorization.

1948665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968.

The product of its digits is 51840, while the sum is 39.

The square root of 1948665 is about 1395.9459158578. The cubic root of 1948665 is about 124.9047808182.

It can be divided in two parts, 19 and 48665, that added together give a palindrome (48684).

The spelling of 1948665 in words is "one million, nine hundred forty-eight thousand, six hundred sixty-five".