1423634782 has 4 divisors (see below), whose sum is σ = 2135452176. Its totient is φ = 711817390.

The previous prime is 1423634743. The next prime is 1423634789. The reversal of 1423634782 is 2874363241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2874363241 = 37 ⋅77685493.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423634789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355908694 + ... + 355908697.

It is an arithmetic number, because the mean of its divisors is an integer number (533863044).

Almost surely, 2^1423634782 is an apocalyptic number.

1423634782 is a deficient number, since it is larger than the sum of its proper divisors (711817394).

1423634782 is an equidigital number, since it uses as much as digits as its factorization.

1423634782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711817393.

The product of its digits is 193536, while the sum is 40.

The square root of 1423634782 is about 37731.0850890880. The cubic root of 1423634782 is about 1124.9490760818.

The spelling of 1423634782 in words is "one billion, four hundred twenty-three million, six hundred thirty-four thousand, seven hundred eighty-two".