1357405205 has 32 divisors (see below), whose sum is σ = 1862318304. Its totient is φ = 940916736.

The previous prime is 1357405169. The next prime is 1357405213. The reversal of 1357405205 is 5025047531.

It can be written as a sum of positive squares in 16 ways, for example, as 1001026321 + 356378884 = 31639^2 + 18878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1357405205 - 2¹⁴ = 1357388821 is a prime.

It is a super-2 number, since 2×1357405205² = 3685097781122184050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 477047 + ... + 479883.

It is an arithmetic number, because the mean of its divisors is an integer number (58197447).

Almost surely, 2^1357405205 is an apocalyptic number.

It is an amenable number.

1357405205 is a deficient number, since it is larger than the sum of its proper divisors (504913099).

1357405205 is a wasteful number, since it uses less digits than its factorization.

1357405205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 1357405205 is about 36842.9804033279. The cubic root of 1357405205 is about 1107.2265813024.

The spelling of 1357405205 in words is "one billion, three hundred fifty-seven million, four hundred five thousand, two hundred five".