1128255837 has 8 divisors (see below), whose sum is σ = 1544999136. Its totient is φ = 731841552.

The previous prime is 1128255833. The next prime is 1128255859. The reversal of 1128255837 is 7385528211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128255837 - 2² = 1128255833 is a prime.

It is a super-2 number, since 2×1128255837² = 2545922467449141138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128255833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5082123 + ... + 5082344.

It is an arithmetic number, because the mean of its divisors is an integer number (193124892).

Almost surely, 2^1128255837 is an apocalyptic number.

It is an amenable number.

1128255837 is a deficient number, since it is larger than the sum of its proper divisors (416743299).

1128255837 is a wasteful number, since it uses less digits than its factorization.

1128255837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10164507.

The product of its digits is 134400, while the sum is 42.

The square root of 1128255837 is about 33589.5197494695. The cubic root of 1128255837 is about 1041.0442657573.

The spelling of 1128255837 in words is "one billion, one hundred twenty-eight million, two hundred fifty-five thousand, eight hundred thirty-seven".