2547139148 has 6 divisors (see below), whose sum is σ = 4457493516. Its totient is φ = 1273569572.

The previous prime is 2547139139. The next prime is 2547139151. The reversal of 2547139148 is 8419317452.

It is a junction number, because it is equal to n+sod(n) for n = 2547139099 and 2547139108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318392390 + ... + 318392397.

It is an arithmetic number, because the mean of its divisors is an integer number (742915586).

Almost surely, 2^2547139148 is an apocalyptic number.

It is an amenable number.

2547139148 is a deficient number, since it is larger than the sum of its proper divisors (1910354368).

2547139148 is a wasteful number, since it uses less digits than its factorization.

2547139148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636784791 (or 636784789 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 2547139148 is about 50469.1900866261. The cubic root of 2547139148 is about 1365.6861033970.

The spelling of 2547139148 in words is "two billion, five hundred forty-seven million, one hundred thirty-nine thousand, one hundred forty-eight".