19298489377 has 2 divisors, whose sum is σ = 19298489378. Its totient is φ = 19298489376.

The previous prime is 19298489359. The next prime is 19298489401. The reversal of 19298489377 is 77398489291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13655324736 + 5643164641 = 116856^2 + 75121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19298489377 is a prime.

It is not a weakly prime, because it can be changed into another prime (19298489317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9649244688 + 9649244689.

It is an arithmetic number, because the mean of its divisors is an integer number (9649244689).

Almost surely, 2^19298489377 is an apocalyptic number.

It is an amenable number.

19298489377 is a deficient number, since it is larger than the sum of its proper divisors (1).

19298489377 is an equidigital number, since it uses as much as digits as its factorization.

19298489377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 67.

The spelling of 19298489377 in words is "nineteen billion, two hundred ninety-eight million, four hundred eighty-nine thousand, three hundred seventy-seven".