135991514 has 8 divisors (see below), whose sum is σ = 204763680. Its totient is φ = 67736956.

The previous prime is 135991507. The next prime is 135991523. The reversal of 135991514 is 415199531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128744 + ... + 129795.

It is an arithmetic number, because the mean of its divisors is an integer number (25595460).

Almost surely, 2^135991514 is an apocalyptic number.

135991514 is a deficient number, since it is larger than the sum of its proper divisors (68772166).

135991514 is a wasteful number, since it uses less digits than its factorization.

135991514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258804.

The product of its digits is 24300, while the sum is 38.

The square root of 135991514 is about 11661.5399497665. The cubic root of 135991514 is about 514.2456218819.

The spelling of 135991514 in words is "one hundred thirty-five million, nine hundred ninety-one thousand, five hundred fourteen".