1049428731 has 16 divisors (see below), whose sum is σ = 1508165120. Its totient is φ = 645248160.

The previous prime is 1049428703. The next prime is 1049428747. The reversal of 1049428731 is 1378249401.

It is not a de Polignac number, because 1049428731 - 2⁷ = 1049428603 is a prime.

It is a super-2 number, since 2×1049428731² = 2202601322896540722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 1049428731.

It is not an unprimeable number, because it can be changed into a prime (1049428781) 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, 37080 + ... + 58938.

It is an arithmetic number, because the mean of its divisors is an integer number (94260320).

Almost surely, 2^1049428731 is an apocalyptic number.

1049428731 is a deficient number, since it is larger than the sum of its proper divisors (458736389).

1049428731 is a wasteful number, since it uses less digits than its factorization.

1049428731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23106.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1049428731 is about 32394.8874207027. The cubic root of 1049428731 is about 1016.2119945725.

The spelling of 1049428731 in words is "one billion, forty-nine million, four hundred twenty-eight thousand, seven hundred thirty-one".