2151746500 has 24 divisors (see below), whose sum is σ = 4699415448. Its totient is φ = 860698400.

The previous prime is 2151746479. The next prime is 2151746533. The reversal of 2151746500 is 56471512.

It can be written as a sum of positive squares in 4 ways, for example, as 11943936 + 2139802564 = 3456^2 + 46258^2 .

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, 2151247 + ... + 2152246.

It is an arithmetic number, because the mean of its divisors is an integer number (195808977).

Almost surely, 2^2151746500 is an apocalyptic number.

2151746500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151746500 is an abundant number, since it is smaller than the sum of its proper divisors (2547668948).

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

2151746500 is a wasteful number, since it uses less digits than its factorization.

2151746500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303512 (or 4303500 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 2151746500 is about 46386.9216482405. The cubic root of 2151746500 is about 1291.0122655780.

The spelling of 2151746500 in words is "two billion, one hundred fifty-one million, seven hundred forty-six thousand, five hundred".