201061969 has 2 divisors, whose sum is σ = 201061970. Its totient is φ = 201061968.

The previous prime is 201061921. The next prime is 201061979. The reversal of 201061969 is 969160102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111513600 + 89548369 = 10560^2 + 9463^2 .

It is a cyclic number.

It is not a de Polignac number, because 201061969 - 2⁹ = 201061457 is a prime.

It is a super-2 number, since 2×201061969² = 80851830756313922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201061979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100530984 + 100530985.

It is an arithmetic number, because the mean of its divisors is an integer number (100530985).

Almost surely, 2^201061969 is an apocalyptic number.

It is an amenable number.

201061969 is a deficient number, since it is larger than the sum of its proper divisors (1).

201061969 is an equidigital number, since it uses as much as digits as its factorization.

201061969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 201061969 is about 14179.6321884596. The cubic root of 201061969 is about 585.8367930682.

The spelling of 201061969 in words is "two hundred one million, sixty-one thousand, nine hundred sixty-nine".