2081549375 has 40 divisors (see below), whose sum is σ = 2700598032. Its totient is φ = 1602720000.

The previous prime is 2081549363. The next prime is 2081549453. The reversal of 2081549375 is 5739451802.

It is a Cunningham number, because it is equal to 45624²-1.

It is not a de Polignac number, because 2081549375 - 2⁴ = 2081549359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1961345 + ... + 1962405.

Almost surely, 2^2081549375 is an apocalyptic number.

2081549375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2081549375 is a deficient number, since it is larger than the sum of its proper divisors (619048657).

2081549375 is an equidigital number, since it uses as much as digits as its factorization.

2081549375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 2081549375 is about 45623.9999890409. Note that the first 4 decimals coincide. The cubic root of 2081549375 is about 1276.8177327921.

The spelling of 2081549375 in words is "two billion, eighty-one million, five hundred forty-nine thousand, three hundred seventy-five".