270138091 has 4 divisors (see below), whose sum is σ = 270318384. Its totient is φ = 269957800.

The previous prime is 270138019. The next prime is 270138101. The reversal of 270138091 is 190831072.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 270138091 - 2¹⁹ = 269613803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (270138691) 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, 87880 + ... + 90901.

It is an arithmetic number, because the mean of its divisors is an integer number (67579596).

Almost surely, 2^270138091 is an apocalyptic number.

270138091 is a deficient number, since it is larger than the sum of its proper divisors (180293).

270138091 is a wasteful number, since it uses less digits than its factorization.

270138091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180292.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 270138091 is about 16435.8781633352. The cubic root of 270138091 is about 646.4405763930.

The spelling of 270138091 in words is "two hundred seventy million, one hundred thirty-eight thousand, ninety-one".