1971573485 has 8 divisors (see below), whose sum is σ = 2703872256. Its totient is φ = 1351936080.

The previous prime is 1971573481. The next prime is 1971573517. The reversal of 1971573485 is 5843751791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1971573485 - 2² = 1971573481 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 (1971573481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28165301 + ... + 28165370.

It is an arithmetic number, because the mean of its divisors is an integer number (337984032).

Almost surely, 2^1971573485 is an apocalyptic number.

It is an amenable number.

1971573485 is a deficient number, since it is larger than the sum of its proper divisors (732298771).

1971573485 is an equidigital number, since it uses as much as digits as its factorization.

1971573485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56330683.

The product of its digits is 1058400, while the sum is 50.

The square root of 1971573485 is about 44402.4040452766. The cubic root of 1971573485 is about 1253.9233497778.

The spelling of 1971573485 in words is "one billion, nine hundred seventy-one million, five hundred seventy-three thousand, four hundred eighty-five".