1415823561 has 6 divisors (see below), whose sum is σ = 2045078490. Its totient is φ = 943882368.

The previous prime is 1415823553. The next prime is 1415823593. The reversal of 1415823561 is 1653285141.

1415823561 is a `hidden beast` number, since 1 + 4 + 15 + 82 + 3 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 765573561 + 650250000 = 27669^2 + 25500^2 .

It is not a de Polignac number, because 1415823561 - 2³ = 1415823553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1415823061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78656856 + ... + 78656873.

It is an arithmetic number, because the mean of its divisors is an integer number (340846415).

Almost surely, 2^1415823561 is an apocalyptic number.

It is an amenable number.

1415823561 is a deficient number, since it is larger than the sum of its proper divisors (629254929).

1415823561 is a wasteful number, since it uses less digits than its factorization.

1415823561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157313735 (or 157313732 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 1415823561 is about 37627.4309646566. The cubic root of 1415823561 is about 1122.8878390234.

The spelling of 1415823561 in words is "one billion, four hundred fifteen million, eight hundred twenty-three thousand, five hundred sixty-one".