1354721089 has 2 divisors, whose sum is σ = 1354721090. Its totient is φ = 1354721088.

The previous prime is 1354721087. The next prime is 1354721117. The reversal of 1354721089 is 9801274531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1313337600 + 41383489 = 36240^2 + 6433^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354721089 - 2¹ = 1354721087 is a prime.

Together with 1354721087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1354721083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677360544 + 677360545.

It is an arithmetic number, because the mean of its divisors is an integer number (677360545).

Almost surely, 2^1354721089 is an apocalyptic number.

It is an amenable number.

1354721089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354721089 is an equidigital number, since it uses as much as digits as its factorization.

1354721089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1354721089 is about 36806.5359549089. The cubic root of 1354721089 is about 1106.4962944265.

The spelling of 1354721089 in words is "one billion, three hundred fifty-four million, seven hundred twenty-one thousand, eighty-nine".