3081390000 has 200 divisors, whose sum is σ = 10713658032. Its totient is φ = 758400000.

The previous prime is 3081389977. The next prime is 3081390001. The reversal of 3081390000 is 931803.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (3081390001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 386050 + ... + 393950.

Almost surely, 2^3081390000 is an apocalyptic number.

3081390000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3081390000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5356829016).

3081390000 is an abundant number, since it is smaller than the sum of its proper divisors (7632268032).

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

3081390000 is a wasteful number, since it uses less digits than its factorization.

3081390000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7945 (or 7924 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 3081390000 is about 55510.2693201898. The cubic root of 3081390000 is about 1455.1761102829.

The spelling of 3081390000 in words is "three billion, eighty-one million, three hundred ninety thousand".