1971298063 has 16 divisors (see below), whose sum is σ = 2307191040. Its totient is φ = 1649039616.

The previous prime is 1971298001. The next prime is 1971298159. The reversal of 1971298063 is 3608921791.

It is a happy number.

It is not a de Polignac number, because 1971298063 - 2⁹ = 1971297551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971218063) 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, 566856 + ... + 570322.

It is an arithmetic number, because the mean of its divisors is an integer number (144199440).

Almost surely, 2^1971298063 is an apocalyptic number.

1971298063 is a deficient number, since it is larger than the sum of its proper divisors (335892977).

1971298063 is a wasteful number, since it uses less digits than its factorization.

1971298063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5406.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1971298063 is about 44399.3025057827. The cubic root of 1971298063 is about 1253.8649574730.

The spelling of 1971298063 in words is "one billion, nine hundred seventy-one million, two hundred ninety-eight thousand, sixty-three".