1423165601 has 16 divisors (see below), whose sum is σ = 1673206080. Its totient is φ = 1193382720.

The previous prime is 1423165589. The next prime is 1423165619. The reversal of 1423165601 is 1065613241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1423165601 - 2²² = 1418971297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1423165621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253046 + ... + 258608.

It is an arithmetic number, because the mean of its divisors is an integer number (104575380).

Almost surely, 2^1423165601 is an apocalyptic number.

1423165601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1423165601 is a deficient number, since it is larger than the sum of its proper divisors (250040479).

1423165601 is a wasteful number, since it uses less digits than its factorization.

1423165601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7376.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1423165601 is about 37724.8671435699. The cubic root of 1423165601 is about 1124.8254810109.

Adding to 1423165601 its reverse (1065613241), we get a palindrome (2488778842).

The spelling of 1423165601 in words is "one billion, four hundred twenty-three million, one hundred sixty-five thousand, six hundred one".