308870381849 has 2 divisors, whose sum is σ = 308870381850. Its totient is φ = 308870381848.

The previous prime is 308870381837. The next prime is 308870381873. The reversal of 308870381849 is 948183078803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273704756224 + 35165625625 = 523168^2 + 187525^2 .

It is a cyclic number.

It is not a de Polignac number, because 308870381849 - 2⁸ = 308870381593 is a prime.

It is not a weakly prime, because it can be changed into another prime (308870381819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154435190924 + 154435190925.

It is an arithmetic number, because the mean of its divisors is an integer number (154435190925).

Almost surely, 2^308870381849 is an apocalyptic number.

It is an amenable number.

308870381849 is a deficient number, since it is larger than the sum of its proper divisors (1).

308870381849 is an equidigital number, since it uses as much as digits as its factorization.

308870381849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 59.

The spelling of 308870381849 in words is "three hundred eight billion, eight hundred seventy million, three hundred eighty-one thousand, eight hundred forty-nine".