135787618 has 4 divisors (see below), whose sum is σ = 203681430. Its totient is φ = 67893808.

The previous prime is 135787583. The next prime is 135787621. The reversal of 135787618 is 816787531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 816787531 = 7 ⋅116683933.

It can be written as a sum of positive squares in only one way, i.e., 100942209 + 34845409 = 10047^2 + 5903^2 .

It is a super-2 number, since 2×135787618² = 36876554404227848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33946903 + ... + 33946906.

Almost surely, 2^135787618 is an apocalyptic number.

135787618 is a deficient number, since it is larger than the sum of its proper divisors (67893812).

135787618 is an equidigital number, since it uses as much as digits as its factorization.

135787618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67893811.

The product of its digits is 282240, while the sum is 46.

The square root of 135787618 is about 11652.7944288055. The cubic root of 135787618 is about 513.9884855632.

The spelling of 135787618 in words is "one hundred thirty-five million, seven hundred eighty-seven thousand, six hundred eighteen".