1163426013 has 6 divisors (see below), whose sum is σ = 1680504254. Its totient is φ = 775617336.

The previous prime is 1163426003. The next prime is 1163426021. The reversal of 1163426013 is 3106243611.

1163426013 is a `hidden beast` number, since 1 + 1 + 634 + 26 + 0 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 626901444 + 536524569 = 25038^2 + 23163^2 .

It is not a de Polignac number, because 1163426013 - 2⁵ = 1163425981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163426003) 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, 64634770 + ... + 64634787.

Almost surely, 2^1163426013 is an apocalyptic number.

It is an amenable number.

1163426013 is a deficient number, since it is larger than the sum of its proper divisors (517078241).

1163426013 is a wasteful number, since it uses less digits than its factorization.

1163426013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129269563 (or 129269560 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1163426013 is about 34109.0312527342. The cubic root of 1163426013 is about 1051.7509750578.

Adding to 1163426013 its reverse (3106243611), we get a palindrome (4269669624).

The spelling of 1163426013 in words is "one billion, one hundred sixty-three million, four hundred twenty-six thousand, thirteen".