1680004951 has 2 divisors, whose sum is σ = 1680004952. Its totient is φ = 1680004950.

The previous prime is 1680004919. The next prime is 1680004973. The reversal of 1680004951 is 1594000861.

It is a strong prime.

It is an emirp because it is prime and its reverse (1594000861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1680004951 - 2⁵ = 1680004919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680004751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840002475 + 840002476.

It is an arithmetic number, because the mean of its divisors is an integer number (840002476).

Almost surely, 2^1680004951 is an apocalyptic number.

1680004951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680004951 is an equidigital number, since it uses as much as digits as its factorization.

1680004951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1680004951 is about 40987.8634598097. The cubic root of 1680004951 is about 1188.7855583434.

The spelling of 1680004951 in words is "one billion, six hundred eighty million, four thousand, nine hundred fifty-one".