1613506506 has 8 divisors (see below), whose sum is σ = 3227013024. Its totient is φ = 537835500.

The previous prime is 1613506493. The next prime is 1613506513. The reversal of 1613506506 is 6056053161.

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

1613506506 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134458870 + ... + 134458881.

It is an arithmetic number, because the mean of its divisors is an integer number (403376628).

Almost surely, 2^1613506506 is an apocalyptic number.

1613506506 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.

1613506506 is a wasteful number, since it uses less digits than its factorization.

1613506506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268917756.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 1613506506 is about 40168.4765207743. The cubic root of 1613506506 is about 1172.8889830387. Note that the first 3 decimals are identical.

Adding to 1613506506 its reverse (6056053161), we get a palindrome (7669559667).

The spelling of 1613506506 in words is "one billion, six hundred thirteen million, five hundred six thousand, five hundred six".