262161643 has 2 divisors, whose sum is σ = 262161644. Its totient is φ = 262161642.

The previous prime is 262161631. The next prime is 262161661. The reversal of 262161643 is 346161262.

262161643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 262161643 - 2⁵ = 262161611 is a prime.

It is not a weakly prime, because it can be changed into another prime (262161673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131080821 + 131080822.

It is an arithmetic number, because the mean of its divisors is an integer number (131080822).

Almost surely, 2^262161643 is an apocalyptic number.

262161643 is a deficient number, since it is larger than the sum of its proper divisors (1).

262161643 is an equidigital number, since it uses as much as digits as its factorization.

262161643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 262161643 is about 16191.4064552774. The cubic root of 262161643 is about 640.0143575881.

The spelling of 262161643 in words is "two hundred sixty-two million, one hundred sixty-one thousand, six hundred forty-three".