2630378538 has 12 divisors (see below), whose sum is σ = 5699153538. Its totient is φ = 876792840.

The previous prime is 2630378521. The next prime is 2630378573. The reversal of 2630378538 is 8358730362.

2630378538 is a `hidden beast` number, since 2 + 630 + 3 + 7 + 8 + 5 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2470785849 + 159592689 = 49707^2 + 12633^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2630378493 and 2630378502.

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 5 ways as a sum of consecutive naturals, for example, 73066053 + ... + 73066088.

Almost surely, 2^2630378538 is an apocalyptic number.

2630378538 is an abundant number, since it is smaller than the sum of its proper divisors (3068775000).

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

2630378538 is a wasteful number, since it uses less digits than its factorization.

2630378538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146132149 (or 146132146 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 2630378538 is about 51287.2161264384. The cubic root of 2630378538 is about 1380.4036028054.

The spelling of 2630378538 in words is "two billion, six hundred thirty million, three hundred seventy-eight thousand, five hundred thirty-eight".