1692949121 has 2 divisors, whose sum is σ = 1692949122. Its totient is φ = 1692949120.

The previous prime is 1692949021. The next prime is 1692949123. The reversal of 1692949121 is 1219492961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1061130625 + 631818496 = 32575^2 + 25136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1692949121 is a prime.

Together with 1692949123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1692949123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846474560 + 846474561.

It is an arithmetic number, because the mean of its divisors is an integer number (846474561).

Almost surely, 2^1692949121 is an apocalyptic number.

It is an amenable number.

1692949121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1692949121 is an equidigital number, since it uses as much as digits as its factorization.

1692949121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 44.

The square root of 1692949121 is about 41145.4629455059. The cubic root of 1692949121 is about 1191.8308847601.

The spelling of 1692949121 in words is "one billion, six hundred ninety-two million, nine hundred forty-nine thousand, one hundred twenty-one".