1156730389 has 2 divisors, whose sum is σ = 1156730390. Its totient is φ = 1156730388.

The previous prime is 1156730347. The next prime is 1156730423. The reversal of 1156730389 is 9830376511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643028164 + 513702225 = 25358^2 + 22665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156730389 - 2⁷ = 1156730261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156734389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578365194 + 578365195.

It is an arithmetic number, because the mean of its divisors is an integer number (578365195).

Almost surely, 2^1156730389 is an apocalyptic number.

It is an amenable number.

1156730389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156730389 is an equidigital number, since it uses as much as digits as its factorization.

1156730389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1156730389 is about 34010.7393186329. The cubic root of 1156730389 is about 1049.7294507784.

The spelling of 1156730389 in words is "one billion, one hundred fifty-six million, seven hundred thirty thousand, three hundred eighty-nine".