1566428135 has 4 divisors (see below), whose sum is σ = 1879713768. Its totient is φ = 1253142504.

The previous prime is 1566428099. The next prime is 1566428137. The reversal of 1566428135 is 5318246651.

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

It is a cyclic number.

It is not a de Polignac number, because 1566428135 - 2¹⁰ = 1566427111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1566428092 and 1566428101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566428137) 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, 156642809 + ... + 156642818.

It is an arithmetic number, because the mean of its divisors is an integer number (469928442).

Almost surely, 2^1566428135 is an apocalyptic number.

1566428135 is a deficient number, since it is larger than the sum of its proper divisors (313285633).

1566428135 is an equidigital number, since it uses as much as digits as its factorization.

1566428135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313285632.

The product of its digits is 172800, while the sum is 41.

The square root of 1566428135 is about 39578.1269769048. The cubic root of 1566428135 is about 1161.3688099894.

The spelling of 1566428135 in words is "one billion, five hundred sixty-six million, four hundred twenty-eight thousand, one hundred thirty-five".