1015746449 has 4 divisors (see below), whose sum is σ = 1015891236. Its totient is φ = 1015601664.

The previous prime is 1015746443. The next prime is 1015746467. The reversal of 1015746449 is 9446475101.

1015746449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 575040400 + 440706049 = 23980^2 + 20993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1015746449 is a prime.

It is a super-2 number, since 2×1015746449² = 2063481697312219202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015746443) 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, 61304 + ... + 76089.

It is an arithmetic number, because the mean of its divisors is an integer number (253972809).

Almost surely, 2^1015746449 is an apocalyptic number.

It is an amenable number.

1015746449 is a deficient number, since it is larger than the sum of its proper divisors (144787).

1015746449 is an equidigital number, since it uses as much as digits as its factorization.

1015746449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144786.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1015746449 is about 31870.7773516744. Note that the first 3 decimals coincide. The cubic root of 1015746449 is about 1005.2215047681.

The spelling of 1015746449 in words is "one billion, fifteen million, seven hundred forty-six thousand, four hundred forty-nine".