1641953 has 2 divisors, whose sum is σ = 1641954. Its totient is φ = 1641952.

The previous prime is 1641931. The next prime is 1641971. The reversal of 1641953 is 3591461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1364224 + 277729 = 1168^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641953 - 2⁶ = 1641889 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1641053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820976 + 820977.

It is an arithmetic number, because the mean of its divisors is an integer number (820977).

2^1641953 is an apocalyptic number.

It is an amenable number.

1641953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641953 is an equidigital number, since it uses as much as digits as its factorization.

1641953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 1641953 is about 1281.3871390021. The cubic root of 1641953 is about 117.9741636435.

The spelling of 1641953 in words is "one million, six hundred forty-one thousand, nine hundred fifty-three".