135971194 has 4 divisors (see below), whose sum is σ = 203956794. Its totient is φ = 67985596.

The previous prime is 135971191. The next prime is 135971197. The reversal of 135971194 is 491179531.

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

It is an interprime number because it is at equal distance from previous prime (135971191) and next prime (135971197).

It can be written as a sum of positive squares in only one way, i.e., 131951169 + 4020025 = 11487^2 + 2005^2 .

It is not an unprimeable number, because it can be changed into a prime (135971191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33992797 + ... + 33992800.

Almost surely, 2^135971194 is an apocalyptic number.

135971194 is a deficient number, since it is larger than the sum of its proper divisors (67985600).

135971194 is an equidigital number, since it uses as much as digits as its factorization.

135971194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67985599.

The product of its digits is 34020, while the sum is 40.

The square root of 135971194 is about 11660.6686772243. The cubic root of 135971194 is about 514.2200075593.

The spelling of 135971194 in words is "one hundred thirty-five million, nine hundred seventy-one thousand, one hundred ninety-four".