1356940258 has 4 divisors (see below), whose sum is σ = 2035410390. Its totient is φ = 678470128.

The previous prime is 1356940241. The next prime is 1356940259. The reversal of 1356940258 is 8520496531.

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

It can be written as a sum of positive squares in only one way, i.e., 843147369 + 513792889 = 29037^2 + 22667^2 .

It is a super-2 number, since 2×1356940258² = 3682573727562213128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1356940259) 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 as a sum of consecutive naturals, namely, 339235063 + ... + 339235066.

Almost surely, 2^1356940258 is an apocalyptic number.

1356940258 is a deficient number, since it is larger than the sum of its proper divisors (678470132).

1356940258 is an equidigital number, since it uses as much as digits as its factorization.

1356940258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678470131.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 1356940258 is about 36836.6700177961. The cubic root of 1356940258 is about 1107.1001487863.

The spelling of 1356940258 in words is "one billion, three hundred fifty-six million, nine hundred forty thousand, two hundred fifty-eight".