201914523801 has 27 divisors (see below), whose sum is σ = 294769334847. Its totient is φ = 133187043600.

The previous prime is 201914523763. The next prime is 201914523859. The reversal of 201914523801 is 108325419102.

The square root of 201914523801 is 449349.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 193997083401 + 7917440400 = 440451^2 + 88980^2 .

It is not a de Polignac number, because 201914523801 - 2¹⁵ = 201914491033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201914523001) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 136152006 + ... + 136153488.

Almost surely, 2^201914523801 is an apocalyptic number.

201914523801 is the 449349-th square number.

201914523801 is the 224675-th centered octagonal number.

It is an amenable number.

201914523801 is a deficient number, since it is larger than the sum of its proper divisors (92854811046).

201914523801 is an frugal number, since it uses more digits than its factorization.

201914523801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174 (or 1587 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

Multiplying 201914523801 by its sum of digits (36), we get a square (7268922856836 = 2696094²).

The spelling of 201914523801 in words is "two hundred one billion, nine hundred fourteen million, five hundred twenty-three thousand, eight hundred one".