1990307084 has 24 divisors (see below), whose sum is σ = 3513029520. Its totient is φ = 986605056.

The previous prime is 1990307083. The next prime is 1990307161. The reversal of 1990307084 is 4807030991.

It is a happy number.

It is a super-2 number, since 2×1990307084² = 7922644577241166112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1990307083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474404 + ... + 478580.

It is an arithmetic number, because the mean of its divisors is an integer number (146376230).

Almost surely, 2^1990307084 is an apocalyptic number.

It is an amenable number.

1990307084 is a deficient number, since it is larger than the sum of its proper divisors (1522722436).

1990307084 is a wasteful number, since it uses less digits than its factorization.

1990307084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177 (or 5175 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1990307084 is about 44612.8578326921. The cubic root of 1990307084 is about 1257.8823680601.

The spelling of 1990307084 in words is "one billion, nine hundred ninety million, three hundred seven thousand, eighty-four".