1613039428 has 216 divisors, whose sum is σ = 4100634720. Its totient is φ = 547223040.

The previous prime is 1613039413. The next prime is 1613039429. The reversal of 1613039428 is 8249303161.

It is not an unprimeable number, because it can be changed into a prime (1613039429) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6922800 + ... + 6923032.

It is an arithmetic number, because the mean of its divisors is an integer number (18984420).

Almost surely, 2^1613039428 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 1613039428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2050317360).

1613039428 is an abundant number, since it is smaller than the sum of its proper divisors (2487595292).

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

1613039428 is a wasteful number, since it uses less digits than its factorization.

1613039428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1613039428 is about 40162.6621129626. The cubic root of 1613039428 is about 1172.7757961155.

The spelling of 1613039428 in words is "one billion, six hundred thirteen million, thirty-nine thousand, four hundred twenty-eight".