308809158397 has 2 divisors, whose sum is σ = 308809158398. Its totient is φ = 308809158396.

The previous prime is 308809158367. The next prime is 308809158451. The reversal of 308809158397 is 793851908803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282950588761 + 25858569636 = 531931^2 + 160806^2 .

It is a cyclic number.

It is not a de Polignac number, because 308809158397 - 2⁷ = 308809158269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (308809158367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154404579198 + 154404579199.

It is an arithmetic number, because the mean of its divisors is an integer number (154404579199).

Almost surely, 2^308809158397 is an apocalyptic number.

It is an amenable number.

308809158397 is a deficient number, since it is larger than the sum of its proper divisors (1).

308809158397 is an equidigital number, since it uses as much as digits as its factorization.

308809158397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 308809158397 in words is "three hundred eight billion, eight hundred nine million, one hundred fifty-eight thousand, three hundred ninety-seven".