1181396052 has 36 divisors (see below), whose sum is σ = 2992743936. Its totient is φ = 392949840.

The previous prime is 1181396033. The next prime is 1181396053. The reversal of 1181396052 is 2506931811.

1181396052 is a `hidden beast` number, since 1 + 18 + 1 + 39 + 605 + 2 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1181395998 and 1181396016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181396053) 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, 18324 + ... + 51947.

It is an arithmetic number, because the mean of its divisors is an integer number (83131776).

Almost surely, 2^1181396052 is an apocalyptic number.

1181396052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1181396052 is an abundant number, since it is smaller than the sum of its proper divisors (1811347884).

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

1181396052 is a wasteful number, since it uses less digits than its factorization.

1181396052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70748 (or 70743 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1181396052 is about 34371.4423904497. The cubic root of 1181396052 is about 1057.1383750862.

The spelling of 1181396052 in words is "one billion, one hundred eighty-one million, three hundred ninety-six thousand, fifty-two".