961618045 has 4 divisors (see below), whose sum is σ = 1153941660. Its totient is φ = 769294432.

The previous prime is 961618037. The next prime is 961618051. The reversal of 961618045 is 540816169.

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

It can be written as a sum of positive squares in 2 ways, for example, as 227587396 + 734030649 = 15086^2 + 27093^2 .

It is a cyclic number.

It is not a de Polignac number, because 961618045 - 2³ = 961618037 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 961617989 and 961618007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96161800 + ... + 96161809.

It is an arithmetic number, because the mean of its divisors is an integer number (288485415).

Almost surely, 2^961618045 is an apocalyptic number.

It is an amenable number.

961618045 is a deficient number, since it is larger than the sum of its proper divisors (192323615).

961618045 is a wasteful number, since it uses less digits than its factorization.

961618045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192323614.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 961618045 is about 31009.9668655095. The cubic root of 961618045 is about 987.0387467180.

The spelling of 961618045 in words is "nine hundred sixty-one million, six hundred eighteen thousand, forty-five".