2000156388 has 24 divisors (see below), whose sum is σ = 4681951008. Its totient is φ = 664587456.

The previous prime is 2000156351. The next prime is 2000156399. The reversal of 2000156388 is 8836510002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262506 + ... + 270017.

It is an arithmetic number, because the mean of its divisors is an integer number (195081292).

Almost surely, 2^2000156388 is an apocalyptic number.

It is an amenable number.

2000156388 is an abundant number, since it is smaller than the sum of its proper divisors (2681794620).

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

2000156388 is a wasteful number, since it uses less digits than its factorization.

2000156388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532843 (or 532841 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2000156388 is about 44723.1079868115. The cubic root of 2000156388 is about 1259.9538884612.

It can be divided in two parts, 200015 and 6388, that added together give a triangular number (206403 = T₆₄₂).

The spelling of 2000156388 in words is "two billion, one hundred fifty-six thousand, three hundred eighty-eight".