961630135 has 4 divisors (see below), whose sum is σ = 1153956168. Its totient is φ = 769304104.

The previous prime is 961630127. The next prime is 961630139. The reversal of 961630135 is 531036169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531036169 = 31 ⋅17130199.

It is a cyclic number.

It is not a de Polignac number, because 961630135 - 2³ = 961630127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 961630135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961630139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96163009 + ... + 96163018.

It is an arithmetic number, because the mean of its divisors is an integer number (288489042).

Almost surely, 2^961630135 is an apocalyptic number.

961630135 is a deficient number, since it is larger than the sum of its proper divisors (192326033).

961630135 is a wasteful number, since it uses less digits than its factorization.

961630135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192326032.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 961630135 is about 31010.1618022222. The cubic root of 961630135 is about 987.0428832351.

The spelling of 961630135 in words is "nine hundred sixty-one million, six hundred thirty thousand, one hundred thirty-five".