1600321642 has 4 divisors (see below), whose sum is σ = 2400482466. Its totient is φ = 800160820.

The previous prime is 1600321633. The next prime is 1600321643. The reversal of 1600321642 is 2461230061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1412932921 + 187388721 = 37589^2 + 13689^2 .

It is a super-2 number, since 2×1600321642² = 5122058715707152328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1600321643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400080409 + ... + 400080412.

Almost surely, 2^1600321642 is an apocalyptic number.

1600321642 is a deficient number, since it is larger than the sum of its proper divisors (800160824).

1600321642 is an equidigital number, since it uses as much as digits as its factorization.

1600321642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800160823.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1600321642 is about 40004.0203229625. The cubic root of 1600321642 is about 1169.6854639434.

The spelling of 1600321642 in words is "one billion, six hundred million, three hundred twenty-one thousand, six hundred forty-two".