1601890330 has 32 divisors (see below), whose sum is σ = 2904595200. Its totient is φ = 636065472.

The previous prime is 1601890291. The next prime is 1601890333. The reversal of 1601890330 is 330981061.

It is a junction number, because it is equal to n+sod(n) for n = 1601890292 and 1601890301.

It is not an unprimeable number, because it can be changed into a prime (1601890333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 928849 + ... + 930571.

It is an arithmetic number, because the mean of its divisors is an integer number (90768600).

Almost surely, 2^1601890330 is an apocalyptic number.

1601890330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1601890330 is a deficient number, since it is larger than the sum of its proper divisors (1302704870).

1601890330 is a wasteful number, since it uses less digits than its factorization.

1601890330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1601890330 is about 40023.6221499254. The cubic root of 1601890330 is about 1170.0675272103.

The spelling of 1601890330 in words is "one billion, six hundred one million, eight hundred ninety thousand, three hundred thirty".