2365378561 has 32 divisors (see below), whose sum is σ = 2963520000. Its totient is φ = 1838108160.

The previous prime is 2365378559. The next prime is 2365378583. The reversal of 2365378561 is 1658735632.

It is not a de Polignac number, because 2365378561 - 2¹ = 2365378559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2365378501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2254365 + ... + 2255413.

It is an arithmetic number, because the mean of its divisors is an integer number (92610000).

Almost surely, 2^2365378561 is an apocalyptic number.

It is an amenable number.

2365378561 is a deficient number, since it is larger than the sum of its proper divisors (598141439).

2365378561 is a wasteful number, since it uses less digits than its factorization.

2365378561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489.

The product of its digits is 907200, while the sum is 46.

The square root of 2365378561 is about 48635.1576639780. The cubic root of 2365378561 is about 1332.3967112848.

The spelling of 2365378561 in words is "two billion, three hundred sixty-five million, three hundred seventy-eight thousand, five hundred sixty-one".