2288913778 has 4 divisors (see below), whose sum is σ = 3433370670. Its totient is φ = 1144456888.

The previous prime is 2288913763. The next prime is 2288913859. The reversal of 2288913778 is 8773198822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2013586129 + 275327649 = 44873^2 + 16593^2 .

It is a super-3 number, since 3×2288913778³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572228443 + ... + 572228446.

Almost surely, 2^2288913778 is an apocalyptic number.

2288913778 is a deficient number, since it is larger than the sum of its proper divisors (1144456892).

2288913778 is a wasteful number, since it uses less digits than its factorization.

2288913778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144456891.

The product of its digits is 2709504, while the sum is 55.

The square root of 2288913778 is about 47842.5937632984. The cubic root of 2288913778 is about 1317.8818527652.

The spelling of 2288913778 in words is "two billion, two hundred eighty-eight million, nine hundred thirteen thousand, seven hundred seventy-eight".