2164271500 has 24 divisors (see below), whose sum is σ = 4726770048. Its totient is φ = 865708400.

The previous prime is 2164271497. The next prime is 2164271509. The reversal of 2164271500 is 51724612.

It is a super-2 number, since 2×2164271500² = 9368142251424500000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2164271509) 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, 2163772 + ... + 2164771.

It is an arithmetic number, because the mean of its divisors is an integer number (196948752).

Almost surely, 2^2164271500 is an apocalyptic number.

2164271500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164271500 is an abundant number, since it is smaller than the sum of its proper divisors (2562498548).

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

2164271500 is a wasteful number, since it uses less digits than its factorization.

2164271500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328562 (or 4328550 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2164271500 is about 46521.7314811046. The cubic root of 2164271500 is about 1293.5123518155.

The spelling of 2164271500 in words is "two billion, one hundred sixty-four million, two hundred seventy-one thousand, five hundred".