2157945175 has 12 divisors (see below), whose sum is σ = 2705920560. Its totient is φ = 1706957120.

The previous prime is 2157945161. The next prime is 2157945193. The reversal of 2157945175 is 5715497512.

It is not a de Polignac number, because 2157945175 - 2²³ = 2149556567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 482707 + ... + 487156.

It is an arithmetic number, because the mean of its divisors is an integer number (225493380).

Almost surely, 2^2157945175 is an apocalyptic number.

2157945175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2157945175 is a deficient number, since it is larger than the sum of its proper divisors (547975385).

2157945175 is an equidigital number, since it uses as much as digits as its factorization.

2157945175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969962 (or 969957 counting only the distinct ones).

The product of its digits is 441000, while the sum is 46.

The square root of 2157945175 is about 46453.6884972550. The cubic root of 2157945175 is about 1292.2507778327.

The spelling of 2157945175 in words is "two billion, one hundred fifty-seven million, nine hundred forty-five thousand, one hundred seventy-five".