1971748108 has 12 divisors (see below), whose sum is σ = 3764246472. Its totient is φ = 896249120.

The previous prime is 1971748099. The next prime is 1971748153. The reversal of 1971748108 is 8018471791.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22406185 + ... + 22406272.

It is an arithmetic number, because the mean of its divisors is an integer number (313687206).

Almost surely, 2^1971748108 is an apocalyptic number.

It is an amenable number.

1971748108 is a deficient number, since it is larger than the sum of its proper divisors (1792498364).

1971748108 is a wasteful number, since it uses less digits than its factorization.

1971748108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44812472 (or 44812470 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 46.

The square root of 1971748108 is about 44404.3703704939. The cubic root of 1971748108 is about 1253.9603688381.

The spelling of 1971748108 in words is "one billion, nine hundred seventy-one million, seven hundred forty-eight thousand, one hundred eight".