1601215646 has 8 divisors (see below), whose sum is σ = 2452926240. Its totient is φ = 783573568.

The previous prime is 1601215631. The next prime is 1601215697. The reversal of 1601215646 is 6465121061.

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

It is a Curzon number.

It is a congruent number.

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, 8517011 + ... + 8517198.

It is an arithmetic number, because the mean of its divisors is an integer number (306615780).

Almost surely, 2^1601215646 is an apocalyptic number.

1601215646 is a deficient number, since it is larger than the sum of its proper divisors (851710594).

1601215646 is a wasteful number, since it uses less digits than its factorization.

1601215646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17034258.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1601215646 is about 40015.1926897772. The cubic root of 1601215646 is about 1169.9032345033.

The spelling of 1601215646 in words is "one billion, six hundred one million, two hundred fifteen thousand, six hundred forty-six".