1187120159 has 2 divisors, whose sum is σ = 1187120160. Its totient is φ = 1187120158.

The previous prime is 1187120153. The next prime is 1187120197. The reversal of 1187120159 is 9510217811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1187120159 - 2¹⁶ = 1187054623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1187120153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593560079 + 593560080.

It is an arithmetic number, because the mean of its divisors is an integer number (593560080).

Almost surely, 2^1187120159 is an apocalyptic number.

1187120159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187120159 is an equidigital number, since it uses as much as digits as its factorization.

1187120159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 35.

The square root of 1187120159 is about 34454.6101269482. The cubic root of 1187120159 is about 1058.8429759904.

The spelling of 1187120159 in words is "one billion, one hundred eighty-seven million, one hundred twenty thousand, one hundred fifty-nine".