1963406479 has 4 divisors (see below), whose sum is σ = 1963597680. Its totient is φ = 1963215280.

The previous prime is 1963406453. The next prime is 1963406491. The reversal of 1963406479 is 9746043691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1963406479 - 2⁷ = 1963406351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1963403479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79267 + ... + 101044.

It is an arithmetic number, because the mean of its divisors is an integer number (490899420).

Almost surely, 2^1963406479 is an apocalyptic number.

1963406479 is a deficient number, since it is larger than the sum of its proper divisors (191201).

1963406479 is a wasteful number, since it uses less digits than its factorization.

1963406479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191200.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 1963406479 is about 44310.3427993962. The cubic root of 1963406479 is about 1252.1895446627.

The spelling of 1963406479 in words is "one billion, nine hundred sixty-three million, four hundred six thousand, four hundred seventy-nine".