2139677020 has 96 divisors (see below), whose sum is σ = 5123926080. Its totient is φ = 744007680.

The previous prime is 2139676997. The next prime is 2139677027. The reversal of 2139677020 is 207769312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139677027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 892944 + ... + 895336.

It is an arithmetic number, because the mean of its divisors is an integer number (53374230).

Almost surely, 2^2139677020 is an apocalyptic number.

2139677020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2139677020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2561963040).

2139677020 is an abundant number, since it is smaller than the sum of its proper divisors (2984249060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2139677020 is a wasteful number, since it uses less digits than its factorization.

2139677020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615 (or 2613 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 2139677020 is about 46256.6429823869. The cubic root of 2139677020 is about 1288.5939089064.

The spelling of 2139677020 in words is "two billion, one hundred thirty-nine million, six hundred seventy-seven thousand, twenty".