298778951 has 2 divisors, whose sum is σ = 298778952. Its totient is φ = 298778950.

The previous prime is 298778941. The next prime is 298779049. The reversal of 298778951 is 159877892.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-298778951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298778941) 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, 149389475 + 149389476.

It is an arithmetic number, because the mean of its divisors is an integer number (149389476).

Almost surely, 2^298778951 is an apocalyptic number.

298778951 is a deficient number, since it is larger than the sum of its proper divisors (1).

298778951 is an equidigital number, since it uses as much as digits as its factorization.

298778951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 56.

The square root of 298778951 is about 17285.2234871291. The cubic root of 298778951 is about 668.5234812524.

The spelling of 298778951 in words is "two hundred ninety-eight million, seven hundred seventy-eight thousand, nine hundred fifty-one".