1616530464 has 72 divisors (see below), whose sum is σ = 4745325312. Its totient is φ = 521458560.

The previous prime is 1616530463. The next prime is 1616530501. The reversal of 1616530464 is 4640356161.

It is a happy number.

1616530464 is a `hidden beast` number, since 1 + 6 + 165 + 30 + 464 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1616530464² = 5226341482080110592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1616530463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81604 + ... + 99459.

It is an arithmetic number, because the mean of its divisors is an integer number (65907296).

Almost surely, 2^1616530464 is an apocalyptic number.

It is an amenable number.

1616530464 is an abundant number, since it is smaller than the sum of its proper divisors (3128794848).

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

1616530464 is a wasteful number, since it uses less digits than its factorization.

1616530464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181110 (or 181099 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1616530464 is about 40206.0998357214. The cubic root of 1616530464 is about 1173.6212502234.

The spelling of 1616530464 in words is "one billion, six hundred sixteen million, five hundred thirty thousand, four hundred sixty-four".