1029473657 has 4 divisors (see below), whose sum is σ = 1029793380. Its totient is φ = 1029153936.

The previous prime is 1029473647. The next prime is 1029473663. The reversal of 1029473657 is 7563749201.

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 1022976256 + 6497401 = 31984^2 + 2549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1029473657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1029473617) 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 3 ways as a sum of consecutive naturals, for example, 154982 + ... + 161487.

It is an arithmetic number, because the mean of its divisors is an integer number (257448345).

Almost surely, 2^1029473657 is an apocalyptic number.

It is an amenable number.

1029473657 is a deficient number, since it is larger than the sum of its proper divisors (319723).

1029473657 is an equidigital number, since it uses as much as digits as its factorization.

1029473657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319722.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 1029473657 is about 32085.4119032310. The cubic root of 1029473657 is about 1009.7295805790.

The spelling of 1029473657 in words is "one billion, twenty-nine million, four hundred seventy-three thousand, six hundred fifty-seven".