201263869 has 6 divisors (see below), whose sum is σ = 210395486. Its totient is φ = 192512760.

The previous prime is 201263851. The next prime is 201263893. The reversal of 201263869 is 968362102.

It can be written as a sum of positive squares in only one way, i.e., 194267844 + 6996025 = 13938^2 + 2645^2 .

It is not a de Polignac number, because 201263869 - 2²⁷ = 67046141 is a prime.

It is a super-2 number, since 2×201263869² = 81014289929698322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201263849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189702 + ... + 190759.

Almost surely, 2^201263869 is an apocalyptic number.

It is an amenable number.

201263869 is a deficient number, since it is larger than the sum of its proper divisors (9131617).

201263869 is an equidigital number, since it uses as much as digits as its factorization.

201263869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380507 (or 380484 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 201263869 is about 14186.7497687102. The cubic root of 201263869 is about 586.0328203263.

The spelling of 201263869 in words is "two hundred one million, two hundred sixty-three thousand, eight hundred sixty-nine".