1356886397 has 2 divisors, whose sum is σ = 1356886398. Its totient is φ = 1356886396.

The previous prime is 1356886393. The next prime is 1356886429. The reversal of 1356886397 is 7936886531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1238054596 + 118831801 = 35186^2 + 10901^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356886397 - 2² = 1356886393 is a prime.

It is a super-2 number, since 2×1356886397² = 3682281388727283218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356886393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678443198 + 678443199.

It is an arithmetic number, because the mean of its divisors is an integer number (678443199).

Almost surely, 2^1356886397 is an apocalyptic number.

It is an amenable number.

1356886397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356886397 is an equidigital number, since it uses as much as digits as its factorization.

1356886397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The square root of 1356886397 is about 36835.9389319724. The cubic root of 1356886397 is about 1107.0855005585.

The spelling of 1356886397 in words is "one billion, three hundred fifty-six million, eight hundred eighty-six thousand, three hundred ninety-seven".