1361567616 has 128 divisors (see below), whose sum is σ = 3896432640. Its totient is φ = 420034560.

The previous prime is 1361567591. The next prime is 1361567629. The reversal of 1361567616 is 6167651631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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, 271306 + ... + 276278.

It is an arithmetic number, because the mean of its divisors is an integer number (30440880).

Almost surely, 2^1361567616 is an apocalyptic number.

1361567616 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 1361567616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1948216320).

1361567616 is an abundant number, since it is smaller than the sum of its proper divisors (2534865024).

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

1361567616 is a wasteful number, since it uses less digits than its factorization.

1361567616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044 (or 5032 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 1361567616 is about 36899.4256865876. The cubic root of 1361567616 is about 1108.3571769621.

The spelling of 1361567616 in words is "one billion, three hundred sixty-one million, five hundred sixty-seven thousand, six hundred sixteen".