201899655 has 16 divisors (see below), whose sum is σ = 358932960. Its totient is φ = 107679744.

The previous prime is 201899627. The next prime is 201899657. The reversal of 201899655 is 556998102.

It is not a de Polignac number, because 201899655 - 2⁵ = 201899623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 201899655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201899657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747642 + ... + 747911.

It is an arithmetic number, because the mean of its divisors is an integer number (22433310).

Almost surely, 2^201899655 is an apocalyptic number.

201899655 is a deficient number, since it is larger than the sum of its proper divisors (157033305).

201899655 is a wasteful number, since it uses less digits than its factorization.

201899655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495567 (or 1495561 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 201899655 is about 14209.1398402577. The cubic root of 201899655 is about 586.6492578698.

The spelling of 201899655 in words is "two hundred one million, eight hundred ninety-nine thousand, six hundred fifty-five".