1994902667 has 2 divisors, whose sum is σ = 1994902668. Its totient is φ = 1994902666.

The previous prime is 1994902633. The next prime is 1994902681. The reversal of 1994902667 is 7662094991.

It is a strong prime.

It is an emirp because it is prime and its reverse (7662094991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1994902667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1994902687) 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, 997451333 + 997451334.

It is an arithmetic number, because the mean of its divisors is an integer number (997451334).

Almost surely, 2^1994902667 is an apocalyptic number.

1994902667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994902667 is an equidigital number, since it uses as much as digits as its factorization.

1994902667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 1994902667 is about 44664.3332761164. Note that the first 3 decimals coincide. The cubic root of 1994902667 is about 1258.8497664065.

The spelling of 1994902667 in words is "one billion, nine hundred ninety-four million, nine hundred two thousand, six hundred sixty-seven".