1608111428 has 48 divisors (see below), whose sum is σ = 3519245184. Its totient is φ = 624637440.

The previous prime is 1608111419. The next prime is 1608111437. The reversal of 1608111428 is 8241118061.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1608111419) and next prime (1608111437).

It is a junction number, because it is equal to n+sod(n) for n = 1608111394 and 1608111403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96050 + ... + 111542.

It is an arithmetic number, because the mean of its divisors is an integer number (73317608).

Almost surely, 2^1608111428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1608111428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1759622592).

1608111428 is an abundant number, since it is smaller than the sum of its proper divisors (1911133756).

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

1608111428 is a wasteful number, since it uses less digits than its factorization.

1608111428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15852 (or 15850 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 1608111428 is about 40101.2646683368. The cubic root of 1608111428 is about 1171.5802612297.

Adding to 1608111428 its reverse (8241118061), we get a palindrome (9849229489).

The spelling of 1608111428 in words is "one billion, six hundred eight million, one hundred eleven thousand, four hundred twenty-eight".