990291468167 has 4 divisors (see below), whose sum is σ = 991836385296. Its totient is φ = 988746551040.

The previous prime is 990291468113. The next prime is 990291468197. The reversal of 990291468167 is 761864192099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 990291468167 - 2¹⁶ = 990291402631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990291468197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772457603 + ... + 772458884.

It is an arithmetic number, because the mean of its divisors is an integer number (247959096324).

Almost surely, 2^990291468167 is an apocalyptic number.

990291468167 is a deficient number, since it is larger than the sum of its proper divisors (1544917129).

990291468167 is a wasteful number, since it uses less digits than its factorization.

990291468167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544917128.

The product of its (nonzero) digits is 11757312, while the sum is 62.

The spelling of 990291468167 in words is "nine hundred ninety billion, two hundred ninety-one million, four hundred sixty-eight thousand, one hundred sixty-seven".