1181372153 has 16 divisors (see below), whose sum is σ = 1303638336. Its totient is φ = 1063661760.

The previous prime is 1181372147. The next prime is 1181372201. The reversal of 1181372153 is 3512731811.

It is not a de Polignac number, because 1181372153 - 2¹⁰ = 1181371129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1181372113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720851 + ... + 722487.

It is an arithmetic number, because the mean of its divisors is an integer number (81477396).

Almost surely, 2^1181372153 is an apocalyptic number.

1181372153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1181372153 is a deficient number, since it is larger than the sum of its proper divisors (122266183).

1181372153 is a wasteful number, since it uses less digits than its factorization.

1181372153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984.

The product of its digits is 5040, while the sum is 32.

The square root of 1181372153 is about 34371.0947308927. The cubic root of 1181372153 is about 1057.1312465932.

The spelling of 1181372153 in words is "one billion, one hundred eighty-one million, three hundred seventy-two thousand, one hundred fifty-three".