134909390618 has 4 divisors (see below), whose sum is σ = 202364085930. Its totient is φ = 67454695308.

The previous prime is 134909390593. The next prime is 134909390711. The reversal of 134909390618 is 816093909431.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 94695906529 + 40213484089 = 307727^2 + 200533^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 134909390618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33727347653 + ... + 33727347656.

Almost surely, 2^134909390618 is an apocalyptic number.

134909390618 is a deficient number, since it is larger than the sum of its proper divisors (67454695312).

134909390618 is an equidigital number, since it uses as much as digits as its factorization.

134909390618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67454695311.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The spelling of 134909390618 in words is "one hundred thirty-four billion, nine hundred nine million, three hundred ninety thousand, six hundred eighteen".