1971590313 has 48 divisors (see below), whose sum is σ = 3350932416. Its totient is φ = 1019612160.

The previous prime is 1971590303. The next prime is 1971590339. The reversal of 1971590313 is 3130951791.

It is not a de Polignac number, because 1971590313 - 2⁸ = 1971590057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1971590303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 374145 + ... + 379377.

It is an arithmetic number, because the mean of its divisors is an integer number (69811092).

Almost surely, 2^1971590313 is an apocalyptic number.

It is an amenable number.

1971590313 is a deficient number, since it is larger than the sum of its proper divisors (1379342103).

1971590313 is a wasteful number, since it uses less digits than its factorization.

1971590313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5494 (or 5487 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 1971590313 is about 44402.5935391166. The cubic root of 1971590313 is about 1253.9269173111.

The spelling of 1971590313 in words is "one billion, nine hundred seventy-one million, five hundred ninety thousand, three hundred thirteen".