1161253953 has 12 divisors (see below), whose sum is σ = 1685798400. Its totient is φ = 770277816.

The previous prime is 1161253927. The next prime is 1161253967. The reversal of 1161253953 is 3593521611.

It is a happy number.

1161253953 is a `hidden beast` number, since 1 + 1 + 612 + 5 + 39 + 5 + 3 = 666.

It is not a de Polignac number, because 1161253953 - 2¹⁰ = 1161252929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161253453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322401 + ... + 325982.

It is an arithmetic number, because the mean of its divisors is an integer number (140483200).

Almost surely, 2^1161253953 is an apocalyptic number.

It is an amenable number.

1161253953 is a deficient number, since it is larger than the sum of its proper divisors (524544447).

1161253953 is a wasteful number, since it uses less digits than its factorization.

1161253953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648588 (or 648585 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 1161253953 is about 34077.1764235243. The cubic root of 1161253953 is about 1051.0960446092.

The spelling of 1161253953 in words is "one billion, one hundred sixty-one million, two hundred fifty-three thousand, nine hundred fifty-three".