1061945197 has 2 divisors, whose sum is σ = 1061945198. Its totient is φ = 1061945196.

The previous prime is 1061945191. The next prime is 1061945219. The reversal of 1061945197 is 7915491601.

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., 634737636 + 427207561 = 25194^2 + 20669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061945197 is a prime.

It is a super-2 number, since 2×1061945197² = 2255455202862737618, which contains 22 as substring.

It is a zygodrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061945191) 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, 530972598 + 530972599.

It is an arithmetic number, because the mean of its divisors is an integer number (530972599).

Almost surely, 2^1061945197 is an apocalyptic number.

It is an amenable number.

1061945197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061945197 is an equidigital number, since it uses as much as digits as its factorization.

1061945197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 1061945197 is about 32587.5006252397. The cubic root of 1061945197 is about 1020.2361355764.

The spelling of 1061945197 in words is "one billion, sixty-one million, nine hundred forty-five thousand, one hundred ninety-seven".