1669417031 has 2 divisors, whose sum is σ = 1669417032. Its totient is φ = 1669417030.

The previous prime is 1669417021. The next prime is 1669417033. The reversal of 1669417031 is 1307149661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1669417031 - 2¹⁴ = 1669400647 is a prime.

It is a super-2 number, since 2×1669417031² = 5573906446785709922, which contains 22 as substring.

Together with 1669417033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1669417033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834708515 + 834708516.

It is an arithmetic number, because the mean of its divisors is an integer number (834708516).

Almost surely, 2^1669417031 is an apocalyptic number.

1669417031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1669417031 is an equidigital number, since it uses as much as digits as its factorization.

1669417031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1669417031 is about 40858.5001070769. The cubic root of 1669417031 is about 1186.2829265756.

The spelling of 1669417031 in words is "one billion, six hundred sixty-nine million, four hundred seventeen thousand, thirty-one".