191097030547 has 2 divisors, whose sum is σ = 191097030548. Its totient is φ = 191097030546.

The previous prime is 191097030541. The next prime is 191097030557. The reversal of 191097030547 is 745030790191.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191097030547 is a prime.

It is a super-2 number, since 2×191097030547² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191097030497 and 191097030506.

It is not a weakly prime, because it can be changed into another prime (191097030541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95548515273 + 95548515274.

It is an arithmetic number, because the mean of its divisors is an integer number (95548515274).

Almost surely, 2^191097030547 is an apocalyptic number.

191097030547 is a deficient number, since it is larger than the sum of its proper divisors (1).

191097030547 is an equidigital number, since it uses as much as digits as its factorization.

191097030547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 46.

The spelling of 191097030547 in words is "one hundred ninety-one billion, ninety-seven million, thirty thousand, five hundred forty-seven".