1677331109 has 2 divisors, whose sum is σ = 1677331110. Its totient is φ = 1677331108.

The previous prime is 1677331099. The next prime is 1677331169. The reversal of 1677331109 is 9011337761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 902822209 + 774508900 = 30047^2 + 27830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1677331109 - 2⁴ = 1677331093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1677331169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838665554 + 838665555.

It is an arithmetic number, because the mean of its divisors is an integer number (838665555).

Almost surely, 2^1677331109 is an apocalyptic number.

It is an amenable number.

1677331109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1677331109 is an equidigital number, since it uses as much as digits as its factorization.

1677331109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 1677331109 is about 40955.2329867625. The cubic root of 1677331109 is about 1188.1545458023.

The spelling of 1677331109 in words is "one billion, six hundred seventy-seven million, three hundred thirty-one thousand, one hundred nine".