1357284905 has 8 divisors (see below), whose sum is σ = 1632726600. Its totient is φ = 1083171456.

The previous prime is 1357284833. The next prime is 1357284979. The reversal of 1357284905 is 5094827531.

It can be written as a sum of positive squares in 4 ways, for example, as 614395369 + 742889536 = 24787^2 + 27256^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1357284905 - 2²⁸ = 1088849449 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 329810 + ... + 333899.

It is an arithmetic number, because the mean of its divisors is an integer number (204090825).

Almost surely, 2^1357284905 is an apocalyptic number.

It is an amenable number.

1357284905 is a deficient number, since it is larger than the sum of its proper divisors (275441695).

1357284905 is an equidigital number, since it uses as much as digits as its factorization.

1357284905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664123.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 1357284905 is about 36841.3477630773. The cubic root of 1357284905 is about 1107.1938710273.

The spelling of 1357284905 in words is "one billion, three hundred fifty-seven million, two hundred eighty-four thousand, nine hundred five".