1973947263 has 12 divisors (see below), whose sum is σ = 2725818888. Its totient is φ = 1270585120.

The previous prime is 1973947243. The next prime is 1973947277. The reversal of 1973947263 is 3627493791.

It is not a de Polignac number, because 1973947263 - 2¹⁰ = 1973946239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973947243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388668 + ... + 393713.

It is an arithmetic number, because the mean of its divisors is an integer number (227151574).

Almost surely, 2^1973947263 is an apocalyptic number.

1973947263 is a deficient number, since it is larger than the sum of its proper divisors (751871625).

1973947263 is an equidigital number, since it uses as much as digits as its factorization.

1973947263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782442 (or 782413 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 51.

The square root of 1973947263 is about 44429.1262912068. The cubic root of 1973947263 is about 1254.4263899296.

The spelling of 1973947263 in words is "one billion, nine hundred seventy-three million, nine hundred forty-seven thousand, two hundred sixty-three".