1128908461 has 8 divisors (see below), whose sum is σ = 1138904064. Its totient is φ = 1118930400.

The previous prime is 1128908453. The next prime is 1128908479. The reversal of 1128908461 is 1648098211.

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

It is a cyclic number.

It is not a de Polignac number, because 1128908461 - 2³ = 1128908453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128908401) 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, 147786 + ... + 155236.

It is an arithmetic number, because the mean of its divisors is an integer number (142363008).

Almost surely, 2^1128908461 is an apocalyptic number.

It is an amenable number.

1128908461 is a deficient number, since it is larger than the sum of its proper divisors (9995603).

1128908461 is a wasteful number, since it uses less digits than its factorization.

1128908461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8771.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1128908461 is about 33599.2330418419. The cubic root of 1128908461 is about 1041.2449529579.

The spelling of 1128908461 in words is "one billion, one hundred twenty-eight million, nine hundred eight thousand, four hundred sixty-one".