202138089 has 4 divisors (see below), whose sum is σ = 269517456. Its totient is φ = 134758724.

The previous prime is 202138061. The next prime is 202138103. The reversal of 202138089 is 980831202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202138089 - 2¹² = 202133993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202138049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33689679 + ... + 33689684.

It is an arithmetic number, because the mean of its divisors is an integer number (67379364).

Almost surely, 2^202138089 is an apocalyptic number.

It is an amenable number.

202138089 is a deficient number, since it is larger than the sum of its proper divisors (67379367).

202138089 is an equidigital number, since it uses as much as digits as its factorization.

202138089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67379366.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 202138089 is about 14217.5275276681. The cubic root of 202138089 is about 586.8801020855.

The spelling of 202138089 in words is "two hundred two million, one hundred thirty-eight thousand, eighty-nine".