1427979161 has 8 divisors (see below), whose sum is σ = 1633472640. Its totient is φ = 1222859808.

The previous prime is 1427979121. The next prime is 1427979167. The reversal of 1427979161 is 1619797241.

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 1427979161 - 2⁶ = 1427979097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427979167) 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, 85301 + ... + 100658.

It is an arithmetic number, because the mean of its divisors is an integer number (204184080).

Almost surely, 2^1427979161 is an apocalyptic number.

It is an amenable number.

1427979161 is a deficient number, since it is larger than the sum of its proper divisors (205493479).

1427979161 is a wasteful number, since it uses less digits than its factorization.

1427979161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187063.

The product of its digits is 190512, while the sum is 47.

The square root of 1427979161 is about 37788.6115251672. The cubic root of 1427979161 is about 1126.0922162402.

The spelling of 1427979161 in words is "one billion, four hundred twenty-seven million, nine hundred seventy-nine thousand, one hundred sixty-one".