1165620747 has 16 divisors (see below), whose sum is σ = 1576916480. Its totient is φ = 765741600.

The previous prime is 1165620733. The next prime is 1165620817. The reversal of 1165620747 is 7470265611.

It is not a de Polignac number, because 1165620747 - 2¹⁰ = 1165619723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165420747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123672 + ... + 132762.

It is an arithmetic number, because the mean of its divisors is an integer number (98557280).

Almost surely, 2^1165620747 is an apocalyptic number.

1165620747 is a deficient number, since it is larger than the sum of its proper divisors (411295733).

1165620747 is an equidigital number, since it uses as much as digits as its factorization.

1165620747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9714.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 1165620747 is about 34141.1884239550. The cubic root of 1165620747 is about 1052.4119148509.

The spelling of 1165620747 in words is "one billion, one hundred sixty-five million, six hundred twenty thousand, seven hundred forty-seven".