1995525671 has 16 divisors (see below), whose sum is σ = 2194490880. Its totient is φ = 1806983040.

The previous prime is 1995525667. The next prime is 1995525677. The reversal of 1995525671 is 1765255991.

It is not a de Polignac number, because 1995525671 - 2² = 1995525667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995525677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25976 + ... + 68306.

It is an arithmetic number, because the mean of its divisors is an integer number (137155680).

Almost surely, 2^1995525671 is an apocalyptic number.

1995525671 is a deficient number, since it is larger than the sum of its proper divisors (198965209).

1995525671 is a wasteful number, since it uses less digits than its factorization.

1995525671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42454.

The product of its digits is 850500, while the sum is 50.

The square root of 1995525671 is about 44671.3070213980. The cubic root of 1995525671 is about 1258.9807981648.

The spelling of 1995525671 in words is "one billion, nine hundred ninety-five million, five hundred twenty-five thousand, six hundred seventy-one".