1641923 has 8 divisors (see below), whose sum is σ = 1747200. Its totient is φ = 1538568.

The previous prime is 1641917. The next prime is 1641929. The reversal of 1641923 is 3291461.

It is an interprime number because it is at equal distance from previous prime (1641917) and next prime (1641929).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1641923 - 2⁴ = 1641907 is a prime.

It is a super-2 number, since 2×1641923² = 5391822275858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1641892 and 1641901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538 + ... + 2376.

It is an arithmetic number, because the mean of its divisors is an integer number (218400).

2^1641923 is an apocalyptic number.

1641923 is a deficient number, since it is larger than the sum of its proper divisors (105277).

1641923 is a wasteful number, since it uses less digits than its factorization.

1641923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961.

The product of its digits is 1296, while the sum is 26.

The square root of 1641923 is about 1281.3754328845. The cubic root of 1641923 is about 117.9734451401.

The spelling of 1641923 in words is "one million, six hundred forty-one thousand, nine hundred twenty-three".