1915415423 has 4 divisors (see below), whose sum is σ = 1925443968. Its totient is φ = 1905386880.

The previous prime is 1915415419. The next prime is 1915415429. The reversal of 1915415423 is 3245145191.

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 1915415423 - 2² = 1915415419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915415429) 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, 5013986 + ... + 5014367.

It is an arithmetic number, because the mean of its divisors is an integer number (481360992).

Almost surely, 2^1915415423 is an apocalyptic number.

1915415423 is a deficient number, since it is larger than the sum of its proper divisors (10028545).

1915415423 is a wasteful number, since it uses less digits than its factorization.

1915415423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10028544.

The product of its digits is 21600, while the sum is 35.

The square root of 1915415423 is about 43765.4592458482. The cubic root of 1915415423 is about 1241.9029537639.

The spelling of 1915415423 in words is "one billion, nine hundred fifteen million, four hundred fifteen thousand, four hundred twenty-three".