1061730391 has 2 divisors, whose sum is σ = 1061730392. Its totient is φ = 1061730390.

The previous prime is 1061730361. The next prime is 1061730407. The reversal of 1061730391 is 1930371601.

It is a strong prime.

It is an emirp because it is prime and its reverse (1930371601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1061730391 - 2¹⁹ = 1061206103 is a prime.

It is a super-2 number, since 2×1061730391² = 2254542846346025762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061730361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530865195 + 530865196.

It is an arithmetic number, because the mean of its divisors is an integer number (530865196).

Almost surely, 2^1061730391 is an apocalyptic number.

1061730391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061730391 is an equidigital number, since it uses as much as digits as its factorization.

1061730391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 1061730391 is about 32584.2046243268. The cubic root of 1061730391 is about 1020.1673411848.

The spelling of 1061730391 in words is "one billion, sixty-one million, seven hundred thirty thousand, three hundred ninety-one".