1449878861 has 8 divisors (see below), whose sum is σ = 1472173344. Its totient is φ = 1427603760.

The previous prime is 1449878851. The next prime is 1449878879. The reversal of 1449878861 is 1688789441.

It is a happy number.

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 1449878861 - 2³⁰ = 376137037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1449878797 and 1449878806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1449878821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236906 + ... + 242948.

It is an arithmetic number, because the mean of its divisors is an integer number (184021668).

Almost surely, 2^1449878861 is an apocalyptic number.

It is an amenable number.

1449878861 is a deficient number, since it is larger than the sum of its proper divisors (22294483).

1449878861 is an equidigital number, since it uses as much as digits as its factorization.

1449878861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9691.

The product of its digits is 3096576, while the sum is 56.

The square root of 1449878861 is about 38077.2748630991. The cubic root of 1449878861 is about 1131.8196752410.

The spelling of 1449878861 in words is "one billion, four hundred forty-nine million, eight hundred seventy-eight thousand, eight hundred sixty-one".