961898364 has 144 divisors (see below), whose sum is σ = 2944101888. Its totient is φ = 258850944.

The previous prime is 961898359. The next prime is 961898393. The reversal of 961898364 is 463898169.

It is a self number, because there is not a number n which added to its sum of digits gives 961898364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 387094 + ... + 389570.

It is an arithmetic number, because the mean of its divisors is an integer number (20445152).

Almost surely, 2^961898364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 961898364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472050944).

961898364 is an abundant number, since it is smaller than the sum of its proper divisors (1982203524).

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

961898364 is a wasteful number, since it uses less digits than its factorization.

961898364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2579 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 961898364 is about 31014.4863571848. The cubic root of 961898364 is about 987.1346471762.

The spelling of 961898364 in words is "nine hundred sixty-one million, eight hundred ninety-eight thousand, three hundred sixty-four".