1130728719 has 4 divisors (see below), whose sum is σ = 1507638296. Its totient is φ = 753819144.

The previous prime is 1130728717. The next prime is 1130728733. The reversal of 1130728719 is 9178270311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1130728719 - 2¹ = 1130728717 is a prime.

It is a super-2 number, since 2×1130728719² = 2557094871942761922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130728717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188454784 + ... + 188454789.

It is an arithmetic number, because the mean of its divisors is an integer number (376909574).

Almost surely, 2^1130728719 is an apocalyptic number.

1130728719 is a deficient number, since it is larger than the sum of its proper divisors (376909577).

1130728719 is an equidigital number, since it uses as much as digits as its factorization.

1130728719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376909576.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 1130728719 is about 33626.3099224402. The cubic root of 1130728719 is about 1041.8042887382.

The spelling of 1130728719 in words is "one billion, one hundred thirty million, seven hundred twenty-eight thousand, seven hundred nineteen".