2293947378 has 90 divisors (see below), whose sum is σ = 5313782397. Its totient is φ = 739655280.

The previous prime is 2293947373. The next prime is 2293947379. The reversal of 2293947378 is 8737493922.

2293947378 is a `hidden beast` number, since 229 + 3 + 9 + 47 + 378 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2175942609 + 118004769 = 46647^2 + 10863^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33867.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2293947371) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 32309083 + ... + 32309153.

Almost surely, 2^2293947378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2293947378

2293947378 is an abundant number, since it is smaller than the sum of its proper divisors (3019835019).

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

2293947378 is an frugal number, since it uses more digits than its factorization.

2293947378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 129 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 2293947378 is about 47895.1707168896. The cubic root of 2293947378 is about 1318.8472063354.

The spelling of 2293947378 in words is "two billion, two hundred ninety-three million, nine hundred forty-seven thousand, three hundred seventy-eight".