1183488372 has 36 divisors (see below), whose sum is σ = 3263559936. Its totient is φ = 358632720.

The previous prime is 1183488331. The next prime is 1183488379. The reversal of 1183488372 is 2738843811.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1183488379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1493908 + ... + 1494699.

Almost surely, 2^1183488372 is an apocalyptic number.

1183488372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1183488372 is an abundant number, since it is smaller than the sum of its proper divisors (2080071564).

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

1183488372 is a wasteful number, since it uses less digits than its factorization.

1183488372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988628 (or 2988623 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1183488372 is about 34401.8658214929. The cubic root of 1183488372 is about 1057.7620912004.

It can be divided in two parts, 1183 and 488372, that added together give a triangular number (489555 = T₉₈₉).

The spelling of 1183488372 in words is "one billion, one hundred eighty-three million, four hundred eighty-eight thousand, three hundred seventy-two".