1641115423 has 4 divisors (see below), whose sum is σ = 1697705640. Its totient is φ = 1584525208.

The previous prime is 1641115387. The next prime is 1641115429. The reversal of 1641115423 is 3245111461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1641115423 - 2¹³ = 1641107231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1641115391 and 1641115400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641115429) 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, 28295065 + ... + 28295122.

It is an arithmetic number, because the mean of its divisors is an integer number (424426410).

Almost surely, 2^1641115423 is an apocalyptic number.

1641115423 is a deficient number, since it is larger than the sum of its proper divisors (56590217).

1641115423 is an equidigital number, since it uses as much as digits as its factorization.

1641115423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56590216.

The product of its digits is 2880, while the sum is 28.

The square root of 1641115423 is about 40510.6828256449. The cubic root of 1641115423 is about 1179.5410028956.

Adding to 1641115423 its reverse (3245111461), we get a palindrome (4886226884).

The spelling of 1641115423 in words is "one billion, six hundred forty-one million, one hundred fifteen thousand, four hundred twenty-three".