961513861 has 8 divisors (see below), whose sum is σ = 1198770624. Its totient is φ = 749231520.

The previous prime is 961513853. The next prime is 961513871. The reversal of 961513861 is 168315169.

961513861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 961513861 - 2³ = 961513853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961513801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6243520 + ... + 6243673.

It is an arithmetic number, because the mean of its divisors is an integer number (149846328).

Almost surely, 2^961513861 is an apocalyptic number.

It is an amenable number.

961513861 is a deficient number, since it is larger than the sum of its proper divisors (237256763).

961513861 is a wasteful number, since it uses less digits than its factorization.

961513861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12487211.

The product of its digits is 38880, while the sum is 40.

The square root of 961513861 is about 31008.2869730013. The cubic root of 961513861 is about 987.0030993840.

The spelling of 961513861 in words is "nine hundred sixty-one million, five hundred thirteen thousand, eight hundred sixty-one".