1963681323 has 8 divisors (see below), whose sum is σ = 2667642768. Its totient is φ = 1284420384.

The previous prime is 1963681319. The next prime is 1963681333. The reversal of 1963681323 is 3231863691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1963681323 - 2² = 1963681319 is a prime.

It is a super-3 number, since 3×1963681323³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1963681333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6174940 + ... + 6175257.

It is an arithmetic number, because the mean of its divisors is an integer number (333455346).

Almost surely, 2^1963681323 is an apocalyptic number.

1963681323 is a deficient number, since it is larger than the sum of its proper divisors (703961445).

1963681323 is a wasteful number, since it uses less digits than its factorization.

1963681323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12350253.

The product of its digits is 139968, while the sum is 42.

The square root of 1963681323 is about 44313.4440435406. Note that the first 3 decimals coincide. The cubic root of 1963681323 is about 1252.2479704530.

The spelling of 1963681323 in words is "one billion, nine hundred sixty-three million, six hundred eighty-one thousand, three hundred twenty-three".