1990247094 has 96 divisors (see below), whose sum is σ = 4852257696. Its totient is φ = 584271360.

The previous prime is 1990247071. The next prime is 1990247173. The reversal of 1990247094 is 4907420991.

It is a happy number.

1990247094 is a `hidden beast` number, since 1 + 9 + 90 + 2 + 470 + 94 = 666.

It is a super-2 number, since 2×1990247094² = 7922166990350889672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2321914 + ... + 2322770.

It is an arithmetic number, because the mean of its divisors is an integer number (50544351).

Almost surely, 2^1990247094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1990247094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2426128848).

1990247094 is an abundant number, since it is smaller than the sum of its proper divisors (2862010602).

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

1990247094 is a wasteful number, since it uses less digits than its factorization.

1990247094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1990247094 is about 44612.1854878238. The cubic root of 1990247094 is about 1257.8697299564.

The spelling of 1990247094 in words is "one billion, nine hundred ninety million, two hundred forty-seven thousand, ninety-four".