1128824137 has 4 divisors (see below), whose sum is σ = 1290084736. Its totient is φ = 967563540.

The previous prime is 1128824131. The next prime is 1128824189. The reversal of 1128824137 is 7314288211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128824137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1128824096 and 1128824105.

It is not an unprimeable number, because it can be changed into a prime (1128824131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80630289 + ... + 80630302.

It is an arithmetic number, because the mean of its divisors is an integer number (322521184).

Almost surely, 2^1128824137 is an apocalyptic number.

It is an amenable number.

1128824137 is a deficient number, since it is larger than the sum of its proper divisors (161260599).

1128824137 is an equidigital number, since it uses as much as digits as its factorization.

1128824137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161260598.

The product of its digits is 21504, while the sum is 37.

The square root of 1128824137 is about 33597.9781683363. The cubic root of 1128824137 is about 1041.2190269924.

The spelling of 1128824137 in words is "one billion, one hundred twenty-eight million, eight hundred twenty-four thousand, one hundred thirty-seven".