1601953 has 2 divisors, whose sum is σ = 1601954. Its totient is φ = 1601952.

The previous prime is 1601869. The next prime is 1601969. The reversal of 1601953 is 3591061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1580049 + 21904 = 1257^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601953 - 2⁹ = 1601441 is a prime.

It is a super-3 number, since 3×1601953³ = 12333052066957050531, which contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1601653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800976 + 800977.

It is an arithmetic number, because the mean of its divisors is an integer number (800977).

2^1601953 is an apocalyptic number.

It is an amenable number.

1601953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601953 is an equidigital number, since it uses as much as digits as its factorization.

1601953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1601953 is about 1265.6828196669. The cubic root of 1601953 is about 117.0082785678.

The spelling of 1601953 in words is "one million, six hundred one thousand, nine hundred fifty-three".