1621613046 has 8 divisors (see below), whose sum is σ = 3243226104. Its totient is φ = 540537680.

The previous prime is 1621612997. The next prime is 1621613047. The reversal of 1621613046 is 6403161261.

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

1621613046 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621613047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135134415 + ... + 135134426.

It is an arithmetic number, because the mean of its divisors is an integer number (405403263).

Almost surely, 2^1621613046 is an apocalyptic number.

1621613046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1621613046 is a wasteful number, since it uses less digits than its factorization.

1621613046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270268846.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1621613046 is about 40269.2568344637. The cubic root of 1621613046 is about 1174.8499693154.

The spelling of 1621613046 in words is "one billion, six hundred twenty-one million, six hundred thirteen thousand, forty-six".