1601415616 has 14 divisors (see below), whose sum is σ = 3177809240. Its totient is φ = 800707776.

The previous prime is 1601415539. The next prime is 1601415619. The reversal of 1601415616 is 6165141061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601415619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12510996 + ... + 12511123.

Almost surely, 2^1601415616 is an apocalyptic number.

1601415616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1601415616 is a deficient number, since it is larger than the sum of its proper divisors (1576393624).

1601415616 is an equidigital number, since it uses as much as digits as its factorization.

1601415616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25022131 (or 25022121 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1601415616 is about 40017.6912877292. The cubic root of 1601415616 is about 1169.9519341298.

Adding to 1601415616 its reverse (6165141061), we get a palindrome (7766556677).

The spelling of 1601415616 in words is "one billion, six hundred one million, four hundred fifteen thousand, six hundred sixteen".