1128929893 has 16 divisors (see below), whose sum is σ = 1437367680. Its totient is φ = 862416576.

The previous prime is 1128929887. The next prime is 1128929899. The reversal of 1128929893 is 3989298211.

It is an interprime number because it is at equal distance from previous prime (1128929887) and next prime (1128929899).

It is not a de Polignac number, because 1128929893 - 2¹³ = 1128921701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128929893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128929899) 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 15 ways as a sum of consecutive naturals, for example, 211255 + ... + 216532.

It is an arithmetic number, because the mean of its divisors is an integer number (89835480).

Almost surely, 2^1128929893 is an apocalyptic number.

1128929893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1128929893 is a deficient number, since it is larger than the sum of its proper divisors (308437787).

1128929893 is a wasteful number, since it uses less digits than its factorization.

1128929893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427836.

The product of its digits is 559872, while the sum is 52.

The square root of 1128929893 is about 33599.5519761797. The cubic root of 1128929893 is about 1041.2515421608.

The spelling of 1128929893 in words is "one billion, one hundred twenty-eight million, nine hundred twenty-nine thousand, eight hundred ninety-three".