1128969357 has 4 divisors (see below), whose sum is σ = 1505292480. Its totient is φ = 752646236.

The previous prime is 1128969349. The next prime is 1128969383. The reversal of 1128969357 is 7539698211.

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 not a de Polignac number, because 1128969357 - 2³ = 1128969349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128969157) 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, 188161557 + ... + 188161562.

It is an arithmetic number, because the mean of its divisors is an integer number (376323120).

Almost surely, 2^1128969357 is an apocalyptic number.

It is an amenable number.

1128969357 is a deficient number, since it is larger than the sum of its proper divisors (376323123).

1128969357 is an equidigital number, since it uses as much as digits as its factorization.

1128969357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376323122.

The product of its digits is 816480, while the sum is 51.

The square root of 1128969357 is about 33600.1392407829. The cubic root of 1128969357 is about 1041.2636750288.

The spelling of 1128969357 in words is "one billion, one hundred twenty-eight million, nine hundred sixty-nine thousand, three hundred fifty-seven".