91384844652 has 48 divisors (see below), whose sum is σ = 237503061600. Its totient is φ = 30387121920.

The previous prime is 91384844569. The next prime is 91384844657. The reversal of 91384844652 is 25644848319.

91384844652 is a `hidden beast` number, since 9 + 138 + 48 + 4 + 465 + 2 = 666.

It is a super-2 number, since 2×91384844652² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (91384844657) 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, 990249 + ... + 1078592.

It is an arithmetic number, because the mean of its divisors is an integer number (4947980450).

Almost surely, 2^91384844652 is an apocalyptic number.

It is an amenable number.

91384844652 is an abundant number, since it is smaller than the sum of its proper divisors (146118216948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91384844652 is a wasteful number, since it uses less digits than its factorization.

91384844652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069263 (or 2069255 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 91384844652 in words is "ninety-one billion, three hundred eighty-four million, eight hundred forty-four thousand, six hundred fifty-two".