1620000506 has 12 divisors (see below), whose sum is σ = 2435628762. Its totient is φ = 808128504.

The previous prime is 1620000497. The next prime is 1620000527. The reversal of 1620000506 is 6050000261.

It can be written as a sum of positive squares in only one way, i.e., 866772481 + 753228025 = 29441^2 + 27445^2 .

It is a super-3 number, since 3×1620000506³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 496376 + ... + 499628.

Almost surely, 2^1620000506 is an apocalyptic number.

1620000506 is a deficient number, since it is larger than the sum of its proper divisors (815628256).

1620000506 is an frugal number, since it uses more digits than its factorization.

1620000506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253 (or 3754 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1620000506 is about 40249.2298808313. The cubic root of 1620000506 is about 1174.4604146298.

Adding to 1620000506 its reverse (6050000261), we get a palindrome (7670000767).

The spelling of 1620000506 in words is "one billion, six hundred twenty million, five hundred six", and thus it is an aban number.