208953133 has 2 divisors, whose sum is σ = 208953134. Its totient is φ = 208953132.

The previous prime is 208953119. The next prime is 208953139. The reversal of 208953133 is 331359802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206841924 + 2111209 = 14382^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 208953133 - 2¹³ = 208944941 is a prime.

It is a super-2 number, since 2×208953133² = 87322823581031378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208953139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104476566 + 104476567.

It is an arithmetic number, because the mean of its divisors is an integer number (104476567).

Almost surely, 2^208953133 is an apocalyptic number.

It is an amenable number.

208953133 is a deficient number, since it is larger than the sum of its proper divisors (1).

208953133 is an equidigital number, since it uses as much as digits as its factorization.

208953133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 208953133 is about 14455.2112748310. The cubic root of 208953133 is about 593.4028517277.

The spelling of 208953133 in words is "two hundred eight million, nine hundred fifty-three thousand, one hundred thirty-three".