1185648 has 40 divisors (see below), whose sum is σ = 3245328. Its totient is φ = 371712.

The previous prime is 1185647. The next prime is 1185659. The reversal of 1185648 is 8465811.

It is a super-2 number, since 2×1185648² = 2811522359808, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1185643) 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, 90 + ... + 1542.

2^1185648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1185648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622664).

1185648 is an abundant number, since it is smaller than the sum of its proper divisors (2059680).

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

1185648 is a wasteful number, since it uses less digits than its factorization.

1185648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1475 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 1185648 is about 1088.8746484330. The cubic root of 1185648 is about 105.8405101188.

The spelling of 1185648 in words is "one million, one hundred eighty-five thousand, six hundred forty-eight".