1184505680 has 20 divisors (see below), whose sum is σ = 2753975892. Its totient is φ = 473802240.

The previous prime is 1184505671. The next prime is 1184505689. The reversal of 1184505680 is 865054811.

It is an interprime number because it is at equal distance from previous prime (1184505671) and next prime (1184505689).

It can be written as a sum of positive squares in 2 ways, for example, as 387459856 + 797045824 = 19684^2 + 28232^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1184505689) 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, 7403081 + ... + 7403240.

Almost surely, 2^1184505680 is an apocalyptic number.

1184505680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1184505680 is an abundant number, since it is smaller than the sum of its proper divisors (1569470212).

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

1184505680 is a wasteful number, since it uses less digits than its factorization.

1184505680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14806334 (or 14806328 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 1184505680 is about 34416.6482970088. The cubic root of 1184505680 is about 1058.0650829564.

The spelling of 1184505680 in words is "one billion, one hundred eighty-four million, five hundred five thousand, six hundred eighty".