1616001504 has 192 divisors, whose sum is σ = 4922830080. Its totient is φ = 459694080.

The previous prime is 1616001493. The next prime is 1616001571. The reversal of 1616001504 is 4051006161.

It is a super-2 number, since 2×1616001504² = 5222921721860524032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1251099 + ... + 1252389.

It is an arithmetic number, because the mean of its divisors is an integer number (25639740).

Almost surely, 2^1616001504 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 1616001504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2461415040).

1616001504 is an abundant number, since it is smaller than the sum of its proper divisors (3306828576).

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

1616001504 is a wasteful number, since it uses less digits than its factorization.

1616001504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1616001504 is about 40199.5211911784. The cubic root of 1616001504 is about 1173.4932257423.

Adding to 1616001504 its reverse (4051006161), we get a palindrome (5667007665).

The spelling of 1616001504 in words is "one billion, six hundred sixteen million, one thousand, five hundred four".