1634201423 has 8 divisors (see below), whose sum is σ = 1646893296. Its totient is φ = 1621547200.

The previous prime is 1634201377. The next prime is 1634201453. The reversal of 1634201423 is 3241024361.

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 1634201423 - 2⁸ = 1634201167 is a prime.

It is a super-2 number, since 2×1634201423² = 5341228581870449858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1634201392 and 1634201401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634201453) 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, 81068 + ... + 99198.

It is an arithmetic number, because the mean of its divisors is an integer number (205861662).

Almost surely, 2^1634201423 is an apocalyptic number.

1634201423 is a deficient number, since it is larger than the sum of its proper divisors (12691873).

1634201423 is a wasteful number, since it uses less digits than its factorization.

1634201423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18825.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1634201423 is about 40425.2572409873. The cubic root of 1634201423 is about 1177.8822070843.

Adding to 1634201423 its reverse (3241024361), we get a palindrome (4875225784).

The spelling of 1634201423 in words is "one billion, six hundred thirty-four million, two hundred one thousand, four hundred twenty-three".