1971015914 has 48 divisors (see below), whose sum is σ = 3547825920. Its totient is φ = 803537280.

The previous prime is 1971015911. The next prime is 1971015941. The reversal of 1971015914 is 4195101791.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1971015911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2163119 + ... + 2164029.

It is an arithmetic number, because the mean of its divisors is an integer number (73913040).

Almost surely, 2^1971015914 is an apocalyptic number.

1971015914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1971015914 is a deficient number, since it is larger than the sum of its proper divisors (1576810006).

1971015914 is an equidigital number, since it uses as much as digits as its factorization.

1971015914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 38.

The square root of 1971015914 is about 44396.1249885618. The cubic root of 1971015914 is about 1253.8051333347.

The spelling of 1971015914 in words is "one billion, nine hundred seventy-one million, fifteen thousand, nine hundred fourteen".