1561412360 has 32 divisors (see below), whose sum is σ = 3514743360. Its totient is φ = 624286656.

The previous prime is 1561412357. The next prime is 1561412443. The reversal of 1561412360 is 632141651.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98507 + ... + 113253.

It is an arithmetic number, because the mean of its divisors is an integer number (109835730).

Almost surely, 2^1561412360 is an apocalyptic number.

1561412360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561412360 is an abundant number, since it is smaller than the sum of its proper divisors (1953331000).

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

1561412360 is a wasteful number, since it uses less digits than its factorization.

1561412360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17405 (or 17401 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1561412360 is about 39514.7106784296. The cubic root of 1561412360 is about 1160.1278990962.

The spelling of 1561412360 in words is "one billion, five hundred sixty-one million, four hundred twelve thousand, three hundred sixty".