2261650378 has 32 divisors (see below), whose sum is σ = 3731449680. Its totient is φ = 1021785600.

The previous prime is 2261650373. The next prime is 2261650379. The reversal of 2261650378 is 8730561622.

It can be written as a sum of positive squares in 8 ways, for example, as 1187974089 + 1073676289 = 34467^2 + 32767^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2261650378.

It is not an unprimeable number, because it can be changed into a prime (2261650373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228876 + ... + 238552.

Almost surely, 2^2261650378 is an apocalyptic number.

2261650378 is a deficient number, since it is larger than the sum of its proper divisors (1469799302).

2261650378 is a wasteful number, since it uses less digits than its factorization.

2261650378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9882.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 2261650378 is about 47556.8121093077. The cubic root of 2261650378 is about 1312.6284808224.

The spelling of 2261650378 in words is "two billion, two hundred sixty-one million, six hundred fifty thousand, three hundred seventy-eight".