1518961566 has 8 divisors (see below), whose sum is σ = 3037923144. Its totient is φ = 506320520.

The previous prime is 1518961553. The next prime is 1518961567. The reversal of 1518961566 is 6651698151.

It is a sphenic number, since it is the product of 3 distinct primes.

1518961566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1518961567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126580125 + ... + 126580136.

It is an arithmetic number, because the mean of its divisors is an integer number (379740393).

Almost surely, 2^1518961566 is an apocalyptic number.

1518961566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1518961566 is a wasteful number, since it uses less digits than its factorization.

1518961566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253160266.

The product of its digits is 388800, while the sum is 48.

The square root of 1518961566 is about 38973.8574688213. The cubic root of 1518961566 is about 1149.5175206048.

The spelling of 1518961566 in words is "one billion, five hundred eighteen million, nine hundred sixty-one thousand, five hundred sixty-six".