1201885911 has 32 divisors (see below), whose sum is σ = 1833120000. Its totient is φ = 777716640.

The previous prime is 1201885891. The next prime is 1201885913. The reversal of 1201885911 is 1195881021.

It is not a de Polignac number, because 1201885911 - 2⁶ = 1201885847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201885913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497296 + ... + 499706.

It is an arithmetic number, because the mean of its divisors is an integer number (57285000).

Almost surely, 2^1201885911 is an apocalyptic number.

1201885911 is a deficient number, since it is larger than the sum of its proper divisors (631234089).

1201885911 is a wasteful number, since it uses less digits than its factorization.

1201885911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956 (or 2950 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 36.

The square root of 1201885911 is about 34668.2262453677. The cubic root of 1201885911 is about 1063.2149665535.

The spelling of 1201885911 in words is "one billion, two hundred one million, eight hundred eighty-five thousand, nine hundred eleven".