1561024160 has 192 divisors, whose sum is σ = 3968745984. Its totient is φ = 579379200.

The previous prime is 1561024159. The next prime is 1561024163. The reversal of 1561024160 is 614201651.

It is not an unprimeable number, because it can be changed into a prime (1561024163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18807479 + ... + 18807561.

It is an arithmetic number, because the mean of its divisors is an integer number (20670552).

Almost surely, 2^1561024160 is an apocalyptic number.

1561024160 is a gapful number since it is divisible by the number (10) 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 1561024160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1984372992).

1561024160 is an abundant number, since it is smaller than the sum of its proper divisors (2407721824).

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

1561024160 is a wasteful number, since it uses less digits than its factorization.

1561024160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1561024160 is about 39509.7982784018. The cubic root of 1561024160 is about 1160.0317470503.

The spelling of 1561024160 in words is "one billion, five hundred sixty-one million, twenty-four thousand, one hundred sixty".