1416256561 has 8 divisors (see below), whose sum is σ = 1491670880. Its totient is φ = 1340929728.

The previous prime is 1416256537. The next prime is 1416256573. The reversal of 1416256561 is 1656526141.

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

It is a cyclic number.

It is not a de Polignac number, because 1416256561 - 2⁵ = 1416256529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1416256561.

It is not an unprimeable number, because it can be changed into a prime (1416256861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12790 + ... + 54736.

It is an arithmetic number, because the mean of its divisors is an integer number (186458860).

Almost surely, 2^1416256561 is an apocalyptic number.

It is an amenable number.

1416256561 is a deficient number, since it is larger than the sum of its proper divisors (75414319).

1416256561 is a wasteful number, since it uses less digits than its factorization.

1416256561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43743.

The product of its digits is 43200, while the sum is 37.

The square root of 1416256561 is about 37633.1843058756. The cubic root of 1416256561 is about 1123.0022979363.

The spelling of 1416256561 in words is "one billion, four hundred sixteen million, two hundred fifty-six thousand, five hundred sixty-one".