1963313947 has 16 divisors (see below), whose sum is σ = 2365008640. Its totient is φ = 1592159328.

The previous prime is 1963313941. The next prime is 1963313951. The reversal of 1963313947 is 7493133691.

It is a cyclic number.

It is not a de Polignac number, because 1963313947 - 2¹¹ = 1963311899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1963313897 and 1963313906.

It is not an unprimeable number, because it can be changed into a prime (1963313941) 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, 95293 + ... + 114049.

It is an arithmetic number, because the mean of its divisors is an integer number (147813040).

Almost surely, 2^1963313947 is an apocalyptic number.

1963313947 is a deficient number, since it is larger than the sum of its proper divisors (401694693).

1963313947 is a wasteful number, since it uses less digits than its factorization.

1963313947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19570.

The product of its digits is 367416, while the sum is 46.

The square root of 1963313947 is about 44309.2986516374. The cubic root of 1963313947 is about 1252.1698731675.

The spelling of 1963313947 in words is "one billion, nine hundred sixty-three million, three hundred thirteen thousand, nine hundred forty-seven".