1963888481 has 8 divisors (see below), whose sum is σ = 2008048224. Its totient is φ = 1920216960.

The previous prime is 1963888477. The next prime is 1963888483. The reversal of 1963888481 is 1848883691.

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

It is a cyclic number.

It is not a de Polignac number, because 1963888481 - 2² = 1963888477 is a prime.

It is a super-2 number, since 2×1963888481² = 7713715931608974722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1963888483) 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, 113915 + ... + 130016.

It is an arithmetic number, because the mean of its divisors is an integer number (251006028).

Almost surely, 2^1963888481 is an apocalyptic number.

It is an amenable number.

1963888481 is a deficient number, since it is larger than the sum of its proper divisors (44159743).

1963888481 is an equidigital number, since it uses as much as digits as its factorization.

1963888481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244111.

The product of its digits is 2654208, while the sum is 56.

The square root of 1963888481 is about 44315.7813989554. The cubic root of 1963888481 is about 1252.2920040852.

The spelling of 1963888481 in words is "one billion, nine hundred sixty-three million, eight hundred eighty-eight thousand, four hundred eighty-one".