1163951253 has 6 divisors (see below), whose sum is σ = 1681262934. Its totient is φ = 775967496.

The previous prime is 1163951251. The next prime is 1163951263. The reversal of 1163951253 is 3521593611.

It is a happy number.

1163951253 is a `hidden beast` number, since 1 + 1 + 639 + 5 + 12 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1035423684 + 128527569 = 32178^2 + 11337^2 .

It is not a de Polignac number, because 1163951253 - 2¹ = 1163951251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163951251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64663950 + ... + 64663967.

It is an arithmetic number, because the mean of its divisors is an integer number (280210489).

Almost surely, 2^1163951253 is an apocalyptic number.

It is an amenable number.

1163951253 is a deficient number, since it is larger than the sum of its proper divisors (517311681).

1163951253 is a wasteful number, since it uses less digits than its factorization.

1163951253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129327923 (or 129327920 counting only the distinct ones).

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

The square root of 1163951253 is about 34116.7298110472. The cubic root of 1163951253 is about 1051.9092256512.

The spelling of 1163951253 in words is "one billion, one hundred sixty-three million, nine hundred fifty-one thousand, two hundred fifty-three".