201919201010 has 16 divisors (see below), whose sum is σ = 367053123672. Its totient is φ = 79968000000.

The previous prime is 201919200983. The next prime is 201919201013. The reversal of 201919201010 is 10102919102.

It can be written as a sum of positive squares in 4 ways, for example, as 194294942521 + 7624258489 = 440789^2 + 87317^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201919201013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99958991 + ... + 99961010.

Almost surely, 2^201919201010 is an apocalyptic number.

201919201010 is a deficient number, since it is larger than the sum of its proper divisors (165133922662).

201919201010 is a wasteful number, since it uses less digits than its factorization.

201919201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199920109.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 201919201010 in words is "two hundred one billion, nine hundred nineteen million, two hundred one thousand, ten".