1185020916 has 12 divisors (see below), whose sum is σ = 2765048832. Its totient is φ = 395006968.

The previous prime is 1185020873. The next prime is 1185020923. The reversal of 1185020916 is 6190205811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49375860 + ... + 49375883.

It is an arithmetic number, because the mean of its divisors is an integer number (230420736).

Almost surely, 2^1185020916 is an apocalyptic number.

It is an amenable number.

1185020916 is an abundant number, since it is smaller than the sum of its proper divisors (1580027916).

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

1185020916 is a wasteful number, since it uses less digits than its factorization.

1185020916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98751750 (or 98751748 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1185020916 is about 34424.1327559606. The cubic root of 1185020916 is about 1058.2184730177.

The spelling of 1185020916 in words is "one billion, one hundred eighty-five million, twenty thousand, nine hundred sixteen".