2149547139 has 24 divisors (see below), whose sum is σ = 3298447152. Its totient is φ = 1398072960.

The previous prime is 2149547137. The next prime is 2149547143. The reversal of 2149547139 is 9317459412.

2149547139 is a `hidden beast` number, since 2 + 149 + 5 + 471 + 39 = 666.

It is not a de Polignac number, because 2149547139 - 2¹ = 2149547137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2149547094 and 2149547103.

It is not an unprimeable number, because it can be changed into a prime (2149547137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97914 + ... + 117839.

It is an arithmetic number, because the mean of its divisors is an integer number (137435298).

Almost surely, 2^2149547139 is an apocalyptic number.

2149547139 is a deficient number, since it is larger than the sum of its proper divisors (1148900013).

2149547139 is an equidigital number, since it uses as much as digits as its factorization.

2149547139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215809 (or 215797 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 2149547139 is about 46363.2088945534. The cubic root of 2149547139 is about 1290.5722555693.

The spelling of 2149547139 in words is "two billion, one hundred forty-nine million, five hundred forty-seven thousand, one hundred thirty-nine".