2138079500 has 48 divisors (see below), whose sum is σ = 4915354080. Its totient is φ = 810216000.

The previous prime is 2138079487. The next prime is 2138079533. The reversal of 2138079500 is 59708312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103031 + ... + 122030.

It is an arithmetic number, because the mean of its divisors is an integer number (102403210).

Almost surely, 2^2138079500 is an apocalyptic number.

2138079500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2138079500 is an abundant number, since it is smaller than the sum of its proper divisors (2777274580).

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

2138079500 is a wasteful number, since it uses less digits than its factorization.

2138079500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225099 (or 225087 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 2138079500 is about 46239.3717517875. The cubic root of 2138079500 is about 1288.2731335351.

The spelling of 2138079500 in words is "two billion, one hundred thirty-eight million, seventy-nine thousand, five hundred".