1129651613 has 2 divisors, whose sum is σ = 1129651614. Its totient is φ = 1129651612.

The previous prime is 1129651609. The next prime is 1129651643. The reversal of 1129651613 is 3161569211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649077529 + 480574084 = 25477^2 + 21922^2 .

It is an emirp because it is prime and its reverse (3161569211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1129651613 - 2² = 1129651609 is a prime.

It is a super-2 number, since 2×1129651613² = 2552225533507003538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129651643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564825806 + 564825807.

It is an arithmetic number, because the mean of its divisors is an integer number (564825807).

Almost surely, 2^1129651613 is an apocalyptic number.

It is an amenable number.

1129651613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129651613 is an equidigital number, since it uses as much as digits as its factorization.

1129651613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 1129651613 is about 33610.2902843757. The cubic root of 1129651613 is about 1041.4733840964.

The spelling of 1129651613 in words is "one billion, one hundred twenty-nine million, six hundred fifty-one thousand, six hundred thirteen".