308574449849 has 2 divisors, whose sum is σ = 308574449850. Its totient is φ = 308574449848.

The previous prime is 308574449819. The next prime is 308574449881. The reversal of 308574449849 is 948944475803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168833057449 + 139741392400 = 410893^2 + 373820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-308574449849 is a prime.

It is a super-2 number, since 2×308574449849² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (308574449819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154287224924 + 154287224925.

It is an arithmetic number, because the mean of its divisors is an integer number (154287224925).

Almost surely, 2^308574449849 is an apocalyptic number.

It is an amenable number.

308574449849 is a deficient number, since it is larger than the sum of its proper divisors (1).

308574449849 is an equidigital number, since it uses as much as digits as its factorization.

308574449849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139345920, while the sum is 65.

The spelling of 308574449849 in words is "three hundred eight billion, five hundred seventy-four million, four hundred forty-nine thousand, eight hundred forty-nine".