2361687978 has 32 divisors (see below), whose sum is σ = 5307878016. Its totient is φ = 695078208.

The previous prime is 2361687971. The next prime is 2361687983. The reversal of 2361687978 is 8797861632.

It is a super-3 number, since 3×2361687978³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2361687971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656425 + ... + 660012.

It is an arithmetic number, because the mean of its divisors is an integer number (165871188).

Almost surely, 2^2361687978 is an apocalyptic number.

2361687978 is an abundant number, since it is smaller than the sum of its proper divisors (2946190038).

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

2361687978 is a wasteful number, since it uses less digits than its factorization.

2361687978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316478.

The product of its digits is 6096384, while the sum is 57.

The square root of 2361687978 is about 48597.2013391718. The cubic root of 2361687978 is about 1331.7033930468.

The spelling of 2361687978 in words is "two billion, three hundred sixty-one million, six hundred eighty-seven thousand, nine hundred seventy-eight".