91384780963 has 8 divisors (see below), whose sum is σ = 104475092832. Its totient is φ = 78303304896.

The previous prime is 91384780951. The next prime is 91384781093. The reversal of 91384780963 is 36908748319.

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 91384780963 - 2⁹ = 91384780451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91384780898 and 91384780907.

It is not an unprimeable number, because it can be changed into a prime (91384780063) 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, 2186770 + ... + 2228167.

It is an arithmetic number, because the mean of its divisors is an integer number (13059386604).

Almost surely, 2^91384780963 is an apocalyptic number.

91384780963 is a deficient number, since it is larger than the sum of its proper divisors (13090311869).

91384780963 is a wasteful number, since it uses less digits than its factorization.

91384780963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417901.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 91384780963 in words is "ninety-one billion, three hundred eighty-four million, seven hundred eighty thousand, nine hundred sixty-three".