1701405989 has 2 divisors, whose sum is σ = 1701405990. Its totient is φ = 1701405988.

The previous prime is 1701405971. The next prime is 1701405997. The reversal of 1701405989 is 9895041071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 984076900 + 717329089 = 31370^2 + 26783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1701405989 - 2⁸ = 1701405733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1701605989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 850702994 + 850702995.

It is an arithmetic number, because the mean of its divisors is an integer number (850702995).

Almost surely, 2^1701405989 is an apocalyptic number.

It is an amenable number.

1701405989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1701405989 is an equidigital number, since it uses as much as digits as its factorization.

1701405989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 1701405989 is about 41248.1028533434. The cubic root of 1701405989 is about 1193.8121256229.

The spelling of 1701405989 in words is "one billion, seven hundred one million, four hundred five thousand, nine hundred eighty-nine".