2139050161 has 16 divisors (see below), whose sum is σ = 2230343424. Its totient is φ = 2050199424.

The previous prime is 2139050101. The next prime is 2139050171. The reversal of 2139050161 is 1610509312.

It is not a de Polignac number, because 2139050161 - 2⁷ = 2139050033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139050101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411400 + ... + 416566.

It is an arithmetic number, because the mean of its divisors is an integer number (139396464).

Almost surely, 2^2139050161 is an apocalyptic number.

It is an amenable number.

2139050161 is a deficient number, since it is larger than the sum of its proper divisors (91293263).

2139050161 is a wasteful number, since it uses less digits than its factorization.

2139050161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5400.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 2139050161 is about 46249.8666052130. The cubic root of 2139050161 is about 1288.4680572665.

Adding to 2139050161 its reverse (1610509312), we get a palindrome (3749559473).

The spelling of 2139050161 in words is "two billion, one hundred thirty-nine million, fifty thousand, one hundred sixty-one".