1423666361 has 4 divisors (see below), whose sum is σ = 1533179172. Its totient is φ = 1314153552.

The previous prime is 1423666313. The next prime is 1423666399. The reversal of 1423666361 is 1636663241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1636663241 = 11003 ⋅148747.

It can be written as a sum of positive squares in 2 ways, for example, as 316840000 + 1106826361 = 17800^2 + 33269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423666361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423666061) 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, 54756386 + ... + 54756411.

It is an arithmetic number, because the mean of its divisors is an integer number (383294793).

Almost surely, 2^1423666361 is an apocalyptic number.

It is an amenable number.

1423666361 is a deficient number, since it is larger than the sum of its proper divisors (109512811).

1423666361 is a wasteful number, since it uses less digits than its factorization.

1423666361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109512810.

The product of its digits is 93312, while the sum is 38.

The square root of 1423666361 is about 37731.5035613478. The cubic root of 1423666361 is about 1124.9573938761.

The spelling of 1423666361 in words is "one billion, four hundred twenty-three million, six hundred sixty-six thousand, three hundred sixty-one".