1128234961 has 12 divisors (see below), whose sum is σ = 1296426432. Its totient is φ = 961825536.

The previous prime is 1128234931. The next prime is 1128234967. The reversal of 1128234961 is 1694328211.

It is not a de Polignac number, because 1128234961 - 2⁹ = 1128234449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128234961.

It is not an unprimeable number, because it can be changed into a prime (1128234967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258580 + ... + 262906.

It is an arithmetic number, because the mean of its divisors is an integer number (108035536).

Almost surely, 2^1128234961 is an apocalyptic number.

It is an amenable number.

1128234961 is a deficient number, since it is larger than the sum of its proper divisors (168191471).

1128234961 is an frugal number, since it uses more digits than its factorization.

1128234961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720 (or 4527 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 1128234961 is about 33589.2089963429. The cubic root of 1128234961 is about 1041.0378449399.

The spelling of 1128234961 in words is "one billion, one hundred twenty-eight million, two hundred thirty-four thousand, nine hundred sixty-one".