2287178978 has 18 divisors (see below), whose sum is σ = 3991720203. Its totient is φ = 980016660.

The previous prime is 2287178951. The next prime is 2287179029. The reversal of 2287178978 is 8798717822.

It can be written as a sum of positive squares in only one way, i.e., 1143589489 + 1143589489 = 33817^2 + 33817^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33817.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 471023 + ... + 475853.

Almost surely, 2^2287178978 is an apocalyptic number.

2287178978 is a deficient number, since it is larger than the sum of its proper divisors (1704541225).

2287178978 is an frugal number, since it uses more digits than its factorization.

2287178978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9678 (or 4840 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 59.

The square root of 2287178978 is about 47824.4600387710. The cubic root of 2287178978 is about 1317.5488215402.

The spelling of 2287178978 in words is "two billion, two hundred eighty-seven million, one hundred seventy-eight thousand, nine hundred seventy-eight".