1358421191 has 2 divisors, whose sum is σ = 1358421192. Its totient is φ = 1358421190.

The previous prime is 1358421187. The next prime is 1358421247. The reversal of 1358421191 is 1911248531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1911248531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1358421191 - 2² = 1358421187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1358421121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679210595 + 679210596.

It is an arithmetic number, because the mean of its divisors is an integer number (679210596).

Almost surely, 2^1358421191 is an apocalyptic number.

1358421191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1358421191 is an equidigital number, since it uses as much as digits as its factorization.

1358421191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 35.

The square root of 1358421191 is about 36856.7658781939. The cubic root of 1358421191 is about 1107.5027567970.

The spelling of 1358421191 in words is "one billion, three hundred fifty-eight million, four hundred twenty-one thousand, one hundred ninety-one".