1662741089 has 2 divisors, whose sum is σ = 1662741090. Its totient is φ = 1662741088.

The previous prime is 1662741061. The next prime is 1662741103. The reversal of 1662741089 is 9801472661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1624090000 + 38651089 = 40300^2 + 6217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1662741089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1662741029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831370544 + 831370545.

It is an arithmetic number, because the mean of its divisors is an integer number (831370545).

Almost surely, 2^1662741089 is an apocalyptic number.

It is an amenable number.

1662741089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662741089 is an equidigital number, since it uses as much as digits as its factorization.

1662741089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1662741089 is about 40776.7223915802. The cubic root of 1662741089 is about 1184.6995123137.

The spelling of 1662741089 in words is "one billion, six hundred sixty-two million, seven hundred forty-one thousand, eighty-nine".