135151644 has 24 divisors (see below), whose sum is σ = 317446528. Its totient is φ = 44751600.

The previous prime is 135151633. The next prime is 135151651. The reversal of 135151644 is 446151531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35482 + ... + 39105.

Almost surely, 2^135151644 is an apocalyptic number.

It is an amenable number.

135151644 is an abundant number, since it is smaller than the sum of its proper divisors (182294884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135151644 is a wasteful number, since it uses less digits than its factorization.

135151644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74745 (or 74743 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 135151644 is about 11625.4739258234. The cubic root of 135151644 is about 513.1847918256.

The spelling of 135151644 in words is "one hundred thirty-five million, one hundred fifty-one thousand, six hundred forty-four".