201901912 has 16 divisors (see below), whose sum is σ = 395025840. Its totient is φ = 96561696.

The previous prime is 201901907. The next prime is 201901913. The reversal of 201901912 is 219109102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201901913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548463 + ... + 548830.

It is an arithmetic number, because the mean of its divisors is an integer number (24689115).

Almost surely, 2^201901912 is an apocalyptic number.

It is an amenable number.

201901912 is a deficient number, since it is larger than the sum of its proper divisors (193123928).

201901912 is a wasteful number, since it uses less digits than its factorization.

201901912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097322 (or 1097318 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 201901912 is about 14209.2192607476. The cubic root of 201901912 is about 586.6514438773.

The spelling of 201901912 in words is "two hundred one million, nine hundred one thousand, nine hundred twelve".