1671540275 has 12 divisors (see below), whose sum is σ = 2123265144. Its totient is φ = 1304616000.

The previous prime is 1671540271. The next prime is 1671540281. The reversal of 1671540275 is 5720451761.

It is not a de Polignac number, because 1671540275 - 2² = 1671540271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1671540271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814361 + ... + 816410.

It is an arithmetic number, because the mean of its divisors is an integer number (176938762).

Almost surely, 2^1671540275 is an apocalyptic number.

1671540275 is a deficient number, since it is larger than the sum of its proper divisors (451724869).

1671540275 is a wasteful number, since it uses less digits than its factorization.

1671540275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630822 (or 1630817 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 1671540275 is about 40884.4747428654. The cubic root of 1671540275 is about 1186.7856371992.

The spelling of 1671540275 in words is "one billion, six hundred seventy-one million, five hundred forty thousand, two hundred seventy-five".