1181404312 has 48 divisors (see below), whose sum is σ = 2451456000. Its totient is φ = 533332800.

The previous prime is 1181404303. The next prime is 1181404313. The reversal of 1181404312 is 2134041811.

It is a super-2 number, since 2×1181404312² = 2791432296824386688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181404313) 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, 140137 + ... + 148327.

It is an arithmetic number, because the mean of its divisors is an integer number (51072000).

Almost surely, 2^1181404312 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 1181404312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225728000).

1181404312 is an abundant number, since it is smaller than the sum of its proper divisors (1270051688).

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

1181404312 is a wasteful number, since it uses less digits than its factorization.

1181404312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8368 (or 8353 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1181404312 is about 34371.5625481298. The cubic root of 1181404312 is about 1057.1408388218.

The spelling of 1181404312 in words is "one billion, one hundred eighty-one million, four hundred four thousand, three hundred twelve".