290169813 has 4 divisors (see below), whose sum is σ = 386893088. Its totient is φ = 193446540.

The previous prime is 290169809. The next prime is 290169851. The reversal of 290169813 is 318961092.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 290169813 - 2² = 290169809 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 (290169713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48361633 + ... + 48361638.

It is an arithmetic number, because the mean of its divisors is an integer number (96723272).

Almost surely, 2^290169813 is an apocalyptic number.

It is an amenable number.

290169813 is a deficient number, since it is larger than the sum of its proper divisors (96723275).

290169813 is an equidigital number, since it uses as much as digits as its factorization.

290169813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96723274.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 290169813 is about 17034.3715176111. The cubic root of 290169813 is about 662.0397661724.

The spelling of 290169813 in words is "two hundred ninety million, one hundred sixty-nine thousand, eight hundred thirteen".