2129275547 has 12 divisors (see below), whose sum is σ = 2479424760. Its totient is φ = 1823242176.

The previous prime is 2129275543. The next prime is 2129275553. The reversal of 2129275547 is 7455729212.

2129275547 = T₉₂₉₈ + T₉₂₉₉ + ... + T₉₃₄₆.

It is not a de Polignac number, because 2129275547 - 2² = 2129275543 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2129275498 and 2129275507.

It is not an unprimeable number, because it can be changed into a prime (2129275541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27908 + ... + 70974.

It is an arithmetic number, because the mean of its divisors is an integer number (206618730).

Almost surely, 2^2129275547 is an apocalyptic number.

2129275547 is a deficient number, since it is larger than the sum of its proper divisors (350149213).

2129275547 is a wasteful number, since it uses less digits than its factorization.

2129275547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44090 (or 44083 counting only the distinct ones).

The product of its digits is 352800, while the sum is 44.

The square root of 2129275547 is about 46144.0738015187. The cubic root of 2129275547 is about 1286.5024635939.

The spelling of 2129275547 in words is "two billion, one hundred twenty-nine million, two hundred seventy-five thousand, five hundred forty-seven".