1601614321 has 16 divisors (see below), whose sum is σ = 1640396800. Its totient is φ = 1563427008.

The previous prime is 1601614307. The next prime is 1601614337. The reversal of 1601614321 is 1234161061.

It is a cyclic number.

It is not a de Polignac number, because 1601614321 - 2²¹ = 1599517169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601614351) 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, 4034095 + ... + 4034491.

It is an arithmetic number, because the mean of its divisors is an integer number (102524800).

Almost surely, 2^1601614321 is an apocalyptic number.

It is an amenable number.

1601614321 is a deficient number, since it is larger than the sum of its proper divisors (38782479).

1601614321 is a wasteful number, since it uses less digits than its factorization.

1601614321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1601614321 is about 40020.1739251593. The cubic root of 1601614321 is about 1170.0003216694. Note that the first 3 decimals are identical.

Adding to 1601614321 its reverse (1234161061), we get a palindrome (2835775382).

The spelling of 1601614321 in words is "one billion, six hundred one million, six hundred fourteen thousand, three hundred twenty-one".