1128481739 has 32 divisors (see below), whose sum is σ = 1437253632. Its totient is φ = 860580000.

The previous prime is 1128481721. The next prime is 1128481751. The reversal of 1128481739 is 9371848211.

It is not a de Polignac number, because 1128481739 - 2⁸ = 1128481483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1128481739.

It is not an unprimeable number, because it can be changed into a prime (1128481339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 824834 + ... + 826200.

It is an arithmetic number, because the mean of its divisors is an integer number (44914176).

Almost surely, 2^1128481739 is an apocalyptic number.

1128481739 is a deficient number, since it is larger than the sum of its proper divisors (308771893).

1128481739 is a wasteful number, since it uses less digits than its factorization.

1128481739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607.

The product of its digits is 96768, while the sum is 44.

The square root of 1128481739 is about 33592.8822669327. The cubic root of 1128481739 is about 1041.1137412197.

The spelling of 1128481739 in words is "one billion, one hundred twenty-eight million, four hundred eighty-one thousand, seven hundred thirty-nine".