1191056429 has 2 divisors, whose sum is σ = 1191056430. Its totient is φ = 1191056428.

The previous prime is 1191056417. The next prime is 1191056467. The reversal of 1191056429 is 9246501911.

It is an a-pointer prime, because the next prime (1191056467) can be obtained adding 1191056429 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651423529 + 539632900 = 25523^2 + 23230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1191056429 - 2⁴ = 1191056413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1191056392 and 1191056401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1191056729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595528214 + 595528215.

It is an arithmetic number, because the mean of its divisors is an integer number (595528215).

Almost surely, 2^1191056429 is an apocalyptic number.

It is an amenable number.

1191056429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191056429 is an equidigital number, since it uses as much as digits as its factorization.

1191056429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1191056429 is about 34511.6853978475. The cubic root of 1191056429 is about 1060.0119937530.

The spelling of 1191056429 in words is "one billion, one hundred ninety-one million, fifty-six thousand, four hundred twenty-nine".