201698953 has 2 divisors, whose sum is σ = 201698954. Its totient is φ = 201698952.

The previous prime is 201698933. The next prime is 201698957. The reversal of 201698953 is 359896102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199148544 + 2550409 = 14112^2 + 1597^2 .

It is a cyclic number.

It is not a de Polignac number, because 201698953 - 2⁵ = 201698921 is a prime.

It is a super-3 number, since 3×201698953³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (201698957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100849476 + 100849477.

It is an arithmetic number, because the mean of its divisors is an integer number (100849477).

Almost surely, 2^201698953 is an apocalyptic number.

It is an amenable number.

201698953 is a deficient number, since it is larger than the sum of its proper divisors (1).

201698953 is an equidigital number, since it uses as much as digits as its factorization.

201698953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 201698953 is about 14202.0756581565. The cubic root of 201698953 is about 586.4548036572.

The spelling of 201698953 in words is "two hundred one million, six hundred ninety-eight thousand, nine hundred fifty-three".