1045443657 has 16 divisors (see below), whose sum is σ = 1403412480. Its totient is φ = 692230800.

The previous prime is 1045443653. The next prime is 1045443661. The reversal of 1045443657 is 7563445401.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1045443653) and next prime (1045443661).

It is not a de Polignac number, because 1045443657 - 2² = 1045443653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045443653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555444 + ... + 557322.

It is an arithmetic number, because the mean of its divisors is an integer number (87713280).

Almost surely, 2^1045443657 is an apocalyptic number.

It is an amenable number.

1045443657 is a deficient number, since it is larger than the sum of its proper divisors (357968823).

1045443657 is a wasteful number, since it uses less digits than its factorization.

1045443657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 1045443657 is about 32333.3211563551. The cubic root of 1045443657 is about 1014.9240503889.

The spelling of 1045443657 in words is "one billion, forty-five million, four hundred forty-three thousand, six hundred fifty-seven".