1153387789 has 2 divisors, whose sum is σ = 1153387790. Its totient is φ = 1153387788.

The previous prime is 1153387787. The next prime is 1153387811. The reversal of 1153387789 is 9877833511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086229764 + 67158025 = 32958^2 + 8195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153387789 - 2¹ = 1153387787 is a prime.

Together with 1153387787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1153387787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576693894 + 576693895.

It is an arithmetic number, because the mean of its divisors is an integer number (576693895).

Almost surely, 2^1153387789 is an apocalyptic number.

It is an amenable number.

1153387789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153387789 is an equidigital number, since it uses as much as digits as its factorization.

1153387789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 52.

The square root of 1153387789 is about 33961.5634062980. The cubic root of 1153387789 is about 1048.7173420088.

The spelling of 1153387789 in words is "one billion, one hundred fifty-three million, three hundred eighty-seven thousand, seven hundred eighty-nine".