2139485613 has 8 divisors (see below), whose sum is σ = 2877892608. Its totient is φ = 1413701184.

The previous prime is 2139485611. The next prime is 2139485617. The reversal of 2139485613 is 3165849312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2139485613 - 2¹ = 2139485611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139485611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3155245 + ... + 3155922.

It is an arithmetic number, because the mean of its divisors is an integer number (359736576).

Almost surely, 2^2139485613 is an apocalyptic number.

It is an amenable number.

2139485613 is a deficient number, since it is larger than the sum of its proper divisors (738406995).

2139485613 is a wasteful number, since it uses less digits than its factorization.

2139485613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311283.

The product of its digits is 155520, while the sum is 42.

The square root of 2139485613 is about 46254.5739684196. The cubic root of 2139485613 is about 1288.5554835978. Note that the first 3 decimals are identical.

The spelling of 2139485613 in words is "two billion, one hundred thirty-nine million, four hundred eighty-five thousand, six hundred thirteen".