1684992131 has 2 divisors, whose sum is σ = 1684992132. Its totient is φ = 1684992130.

The previous prime is 1684992107. The next prime is 1684992139. The reversal of 1684992131 is 1312994861.

It is a strong prime.

It is an emirp because it is prime and its reverse (1312994861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1684992131 - 2¹⁸ = 1684729987 is a prime.

It is a super-2 number, since 2×1684992131² = 5678396963063842322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1684992139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842496065 + 842496066.

It is an arithmetic number, because the mean of its divisors is an integer number (842496066).

Almost surely, 2^1684992131 is an apocalyptic number.

1684992131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1684992131 is an equidigital number, since it uses as much as digits as its factorization.

1684992131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 44.

The square root of 1684992131 is about 41048.6556539919. The cubic root of 1684992131 is about 1189.9607196977.

The spelling of 1684992131 in words is "one billion, six hundred eighty-four million, nine hundred ninety-two thousand, one hundred thirty-one".