1994183951 has 2 divisors, whose sum is σ = 1994183952. Its totient is φ = 1994183950.

The previous prime is 1994183831. The next prime is 1994184037. The reversal of 1994183951 is 1593814991.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1994183951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1994183951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1994182951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997091975 + 997091976.

It is an arithmetic number, because the mean of its divisors is an integer number (997091976).

Almost surely, 2^1994183951 is an apocalyptic number.

1994183951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994183951 is an equidigital number, since it uses as much as digits as its factorization.

1994183951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 50.

The square root of 1994183951 is about 44656.2868026440. The cubic root of 1994183951 is about 1258.6985703675.

The spelling of 1994183951 in words is "one billion, nine hundred ninety-four million, one hundred eighty-three thousand, nine hundred fifty-one".