1990292229 has 24 divisors (see below), whose sum is σ = 2998064160. Its totient is φ = 1319420016.

The previous prime is 1990292191. The next prime is 1990292257. The reversal of 1990292229 is 9222920991.

It is not a de Polignac number, because 1990292229 - 2¹⁵ = 1990259461 is a prime.

It is a super-2 number, since 2×1990292229² = 7922526313635576882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990292279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20619 + ... + 66375.

It is an arithmetic number, because the mean of its divisors is an integer number (124919340).

Almost surely, 2^1990292229 is an apocalyptic number.

It is an amenable number.

1990292229 is a deficient number, since it is larger than the sum of its proper divisors (1007771931).

1990292229 is an equidigital number, since it uses as much as digits as its factorization.

1990292229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45951 (or 45939 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1990292229 is about 44612.6913445042. The cubic root of 1990292229 is about 1257.8792385783.

The spelling of 1990292229 in words is "one billion, nine hundred ninety million, two hundred ninety-two thousand, two hundred twenty-nine".