1990471184 has 30 divisors (see below), whose sum is σ = 4176020106. Its totient is φ = 918677760.

The previous prime is 1990471177. The next prime is 1990471187. The reversal of 1990471184 is 4811740991.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7728400 + 1982742784 = 2780^2 + 44528^2 .

It is not an unprimeable number, because it can be changed into a prime (1990471187) 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 in 5 ways as a sum of consecutive naturals, for example, 365357 + ... + 370764.

Almost surely, 2^1990471184 is an apocalyptic number.

It is an amenable number.

1990471184 is an abundant number, since it is smaller than the sum of its proper divisors (2185548922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1990471184 is a wasteful number, since it uses less digits than its factorization.

1990471184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736155 (or 736136 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1990471184 is about 44614.6969506686. The cubic root of 1990471184 is about 1257.9169377378.

The spelling of 1990471184 in words is "one billion, nine hundred ninety million, four hundred seventy-one thousand, one hundred eighty-four".