1601323994 has 8 divisors (see below), whose sum is σ = 2404509300. Its totient is φ = 799820896.

The previous prime is 1601323987. The next prime is 1601324041. The reversal of 1601323994 is 4993231061.

It can be written as a sum of positive squares in 2 ways, for example, as 1599600025 + 1723969 = 39995^2 + 1313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1601323994² = 5128477067520224072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418169 + ... + 421980.

Almost surely, 2^1601323994 is an apocalyptic number.

1601323994 is a deficient number, since it is larger than the sum of its proper divisors (803185306).

1601323994 is an equidigital number, since it uses as much as digits as its factorization.

1601323994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841104.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 1601323994 is about 40016.5465026656. The cubic root of 1601323994 is about 1169.9296215002.

The spelling of 1601323994 in words is "one billion, six hundred one million, three hundred twenty-three thousand, nine hundred ninety-four".