1914415138 has 4 divisors (see below), whose sum is σ = 2871622710. Its totient is φ = 957207568.

The previous prime is 1914415133. The next prime is 1914415141. The reversal of 1914415138 is 8315144191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8315144191 = 15299 ⋅543509.

It can be written as a sum of positive squares in only one way, i.e., 1780249249 + 134165889 = 42193^2 + 11583^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1914415097 and 1914415106.

It is not an unprimeable number, because it can be changed into a prime (1914415133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478603783 + ... + 478603786.

Almost surely, 2^1914415138 is an apocalyptic number.

1914415138 is a deficient number, since it is larger than the sum of its proper divisors (957207572).

1914415138 is an equidigital number, since it uses as much as digits as its factorization.

1914415138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957207571.

The product of its digits is 17280, while the sum is 37.

The square root of 1914415138 is about 43754.0299629646. The cubic root of 1914415138 is about 1241.6867303116.

The spelling of 1914415138 in words is "one billion, nine hundred fourteen million, four hundred fifteen thousand, one hundred thirty-eight".