19470145142957 has 2 divisors, whose sum is σ = 19470145142958. Its totient is φ = 19470145142956.

The previous prime is 19470145142953. The next prime is 19470145142977. The reversal of 19470145142957 is 75924154107491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17037899034601 + 2432246108356 = 4127699^2 + 1559566^2 .

It is a cyclic number.

It is not a de Polignac number, because 19470145142957 - 2² = 19470145142953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19470145142896 and 19470145142905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19470145142953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9735072571478 + 9735072571479.

It is an arithmetic number, because the mean of its divisors is an integer number (9735072571479).

Almost surely, 2^{19470145142957} is an apocalyptic number.

It is an amenable number.

19470145142957 is a deficient number, since it is larger than the sum of its proper divisors (1).

19470145142957 is an equidigital number, since it uses as much as digits as its factorization.

19470145142957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 59.

The spelling of 19470145142957 in words is "nineteen trillion, four hundred seventy billion, one hundred forty-five million, one hundred forty-two thousand, nine hundred fifty-seven".