990519151 has 2 divisors, whose sum is σ = 990519152. Its totient is φ = 990519150.

The previous prime is 990519149. The next prime is 990519217. The reversal of 990519151 is 151915099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990519151 - 2¹ = 990519149 is a prime.

It is a super-2 number, since 2×990519151² = 1962256376995521602, which contains 22 as substring.

Together with 990519149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990519121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495259575 + 495259576.

It is an arithmetic number, because the mean of its divisors is an integer number (495259576).

Almost surely, 2^990519151 is an apocalyptic number.

990519151 is a deficient number, since it is larger than the sum of its proper divisors (1).

990519151 is an equidigital number, since it uses as much as digits as its factorization.

990519151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18225, while the sum is 40.

The square root of 990519151 is about 31472.5142147875. The cubic root of 990519151 is about 996.8296766716.

The spelling of 990519151 in words is "nine hundred ninety million, five hundred nineteen thousand, one hundred fifty-one".