1128058261 has 16 divisors (see below), whose sum is σ = 1238800896. Its totient is φ = 1018710000.

The previous prime is 1128058249. The next prime is 1128058277. The reversal of 1128058261 is 1628508211.

It is not a de Polignac number, because 1128058261 - 2¹³ = 1128050069 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 (1128058231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1787416 + ... + 1788046.

It is an arithmetic number, because the mean of its divisors is an integer number (77425056).

Almost surely, 2^1128058261 is an apocalyptic number.

1128058261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1128058261 is a deficient number, since it is larger than the sum of its proper divisors (110742635).

1128058261 is a wasteful number, since it uses less digits than its factorization.

1128058261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 1128058261 is about 33586.5785843095. The cubic root of 1128058261 is about 1040.9834942660.

The spelling of 1128058261 in words is "one billion, one hundred twenty-eight million, fifty-eight thousand, two hundred sixty-one".