1189952807 has 2 divisors, whose sum is σ = 1189952808. Its totient is φ = 1189952806.

The previous prime is 1189952801. The next prime is 1189952809. The reversal of 1189952807 is 7082599811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1189952807 is a prime.

Together with 1189952809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1189952801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594976403 + 594976404.

It is an arithmetic number, because the mean of its divisors is an integer number (594976404).

Almost surely, 2^1189952807 is an apocalyptic number.

1189952807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189952807 is an equidigital number, since it uses as much as digits as its factorization.

1189952807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 50.

The square root of 1189952807 is about 34495.6925861766. The cubic root of 1189952807 is about 1059.6844934378.

The spelling of 1189952807 in words is "one billion, one hundred eighty-nine million, nine hundred fifty-two thousand, eight hundred seven".