15430445197 has 2 divisors, whose sum is σ = 15430445198. Its totient is φ = 15430445196.

The previous prime is 15430445159. The next prime is 15430445213. The reversal of 15430445197 is 79154403451.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10123176996 + 5307268201 = 100614^2 + 72851^2 .

It is an emirp because it is prime and its reverse (79154403451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15430445197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15430445297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7715222598 + 7715222599.

It is an arithmetic number, because the mean of its divisors is an integer number (7715222599).

Almost surely, 2^15430445197 is an apocalyptic number.

It is an amenable number.

15430445197 is a deficient number, since it is larger than the sum of its proper divisors (1).

15430445197 is an equidigital number, since it uses as much as digits as its factorization.

15430445197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 15430445197 in words is "fifteen billion, four hundred thirty million, four hundred forty-five thousand, one hundred ninety-seven".