1611425136 has 160 divisors (see below), whose sum is σ = 4499712000. Its totient is φ = 495774720.

The previous prime is 1611425119. The next prime is 1611425161. The reversal of 1611425136 is 6315241161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4617090 + ... + 4617438.

It is an arithmetic number, because the mean of its divisors is an integer number (28123200).

Almost surely, 2^1611425136 is an apocalyptic number.

1611425136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1611425136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2249856000).

1611425136 is an abundant number, since it is smaller than the sum of its proper divisors (2888286864).

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

1611425136 is a wasteful number, since it uses less digits than its factorization.

1611425136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 521 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1611425136 is about 40142.5601575186. The cubic root of 1611425136 is about 1172.3844367018.

Adding to 1611425136 its reverse (6315241161), we get a palindrome (7926666297).

The spelling of 1611425136 in words is "one billion, six hundred eleven million, four hundred twenty-five thousand, one hundred thirty-six".