394590051690 has 64 divisors (see below), whose sum is σ = 972097670016. Its totient is φ = 102452620032.

The previous prime is 394590051689. The next prime is 394590051697. The reversal of 394590051690 is 96150095493.

394590051690 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×394590051690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (394590051697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73537 + ... + 891396.

It is an arithmetic number, because the mean of its divisors is an integer number (15189026094).

Almost surely, 2^394590051690 is an apocalyptic number.

394590051690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 394590051690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486048835008).

394590051690 is an abundant number, since it is smaller than the sum of its proper divisors (577507618326).

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

394590051690 is a wasteful number, since it uses less digits than its factorization.

394590051690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965303.

The product of its (nonzero) digits is 1312200, while the sum is 51.

The spelling of 394590051690 in words is "three hundred ninety-four billion, five hundred ninety million, fifty-one thousand, six hundred ninety".