1415985563 has 4 divisors (see below), whose sum is σ = 1419018120. Its totient is φ = 1412953008.

The previous prime is 1415985521. The next prime is 1415985587. The reversal of 1415985563 is 3655895141.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1415985563 - 2¹² = 1415981467 is a prime.

It is a super-2 number, since 2×1415985563² = 4010030229248853938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1415987563) 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, 1515578 + ... + 1516511.

It is an arithmetic number, because the mean of its divisors is an integer number (354754530).

Almost surely, 2^1415985563 is an apocalyptic number.

1415985563 is a deficient number, since it is larger than the sum of its proper divisors (3032557).

1415985563 is an equidigital number, since it uses as much as digits as its factorization.

1415985563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032556.

The product of its digits is 648000, while the sum is 47.

The square root of 1415985563 is about 37629.5836144914. The cubic root of 1415985563 is about 1122.9306652490.

The spelling of 1415985563 in words is "one billion, four hundred fifteen million, nine hundred eighty-five thousand, five hundred sixty-three".