1620152213 has 8 divisors (see below), whose sum is σ = 1648956960. Its totient is φ = 1591392400.

The previous prime is 1620152201. The next prime is 1620152243. The reversal of 1620152213 is 3122510261.

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

It is a cyclic number.

It is not a de Polignac number, because 1620152213 - 2¹⁰ = 1620151189 is a prime.

It is a Duffinian 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 (1620152243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66206 + ... + 87312.

It is an arithmetic number, because the mean of its divisors is an integer number (206119620).

Almost surely, 2^1620152213 is an apocalyptic number.

It is an amenable number.

1620152213 is a deficient number, since it is larger than the sum of its proper divisors (28804747).

1620152213 is a wasteful number, since it uses less digits than its factorization.

1620152213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22467.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1620152213 is about 40251.1144317769. The cubic root of 1620152213 is about 1174.4970747634.

Adding to 1620152213 its reverse (3122510261), we get a palindrome (4742662474).

The spelling of 1620152213 in words is "one billion, six hundred twenty million, one hundred fifty-two thousand, two hundred thirteen".