2361974778 has 96 divisors (see below), whose sum is σ = 5604730560. Its totient is φ = 716325120.

The previous prime is 2361974777. The next prime is 2361974819. The reversal of 2361974778 is 8774791632.

2361974778 is a `hidden beast` number, since 23 + 61 + 97 + 477 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2361974773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 895750 + ... + 898382.

It is an arithmetic number, because the mean of its divisors is an integer number (58382610).

Almost surely, 2^2361974778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2361974778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802365280).

2361974778 is an abundant number, since it is smaller than the sum of its proper divisors (3242755782).

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

2361974778 is a wasteful number, since it uses less digits than its factorization.

2361974778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2761 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 2361974778 is about 48600.1520367992. The cubic root of 2361974778 is about 1331.7572975814.

The spelling of 2361974778 in words is "two billion, three hundred sixty-one million, nine hundred seventy-four thousand, seven hundred seventy-eight".