964881378 has 12 divisors (see below), whose sum is σ = 2090576358. Its totient is φ = 321627120.

The previous prime is 964881373. The next prime is 964881397. The reversal of 964881378 is 873188469.

964881378 is a `hidden beast` number, since 96 + 488 + 1 + 3 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 934708329 + 30173049 = 30573^2 + 5493^2 .

It is a super-2 number, since 2×964881378² = 1861992147222357768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (964881371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26802243 + ... + 26802278.

Almost surely, 2^964881378 is an apocalyptic number.

964881378 is an abundant number, since it is smaller than the sum of its proper divisors (1125694980).

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

964881378 is a wasteful number, since it uses less digits than its factorization.

964881378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53604529 (or 53604526 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 964881378 is about 31062.5397866948. The cubic root of 964881378 is about 988.1540195177.

The spelling of 964881378 in words is "nine hundred sixty-four million, eight hundred eighty-one thousand, three hundred seventy-eight".