1129629568 has 16 divisors (see below), whose sum is σ = 2250434160. Its totient is φ = 564814720.

The previous prime is 1129629559. The next prime is 1129629577. The reversal of 1129629568 is 8659269211.

It is an interprime number because it is at equal distance from previous prime (1129629559) and next prime (1129629577).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4412488 + ... + 4412743.

It is an arithmetic number, because the mean of its divisors is an integer number (140652135).

Almost surely, 2^1129629568 is an apocalyptic number.

It is an amenable number.

1129629568 is a deficient number, since it is larger than the sum of its proper divisors (1120804592).

1129629568 is an frugal number, since it uses more digits than its factorization.

1129629568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825245 (or 8825233 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 1129629568 is about 33609.9623326180. The cubic root of 1129629568 is about 1041.4666093145.

The spelling of 1129629568 in words is "one billion, one hundred twenty-nine million, six hundred twenty-nine thousand, five hundred sixty-eight".