1938354441 has 4 divisors (see below), whose sum is σ = 2584472592. Its totient is φ = 1292236292.

The previous prime is 1938354413. The next prime is 1938354443. The reversal of 1938354441 is 1444538391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1938354441 - 2¹⁴ = 1938338057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1938354393 and 1938354402.

It is not an unprimeable number, because it can be changed into a prime (1938354443) 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, 323059071 + ... + 323059076.

It is an arithmetic number, because the mean of its divisors is an integer number (646118148).

Almost surely, 2^1938354441 is an apocalyptic number.

It is an amenable number.

1938354441 is a deficient number, since it is larger than the sum of its proper divisors (646118151).

1938354441 is an equidigital number, since it uses as much as digits as its factorization.

1938354441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646118150.

The product of its digits is 207360, while the sum is 42.

The square root of 1938354441 is about 44026.7468818672. The cubic root of 1938354441 is about 1246.8409705652.

The spelling of 1938354441 in words is "one billion, nine hundred thirty-eight million, three hundred fifty-four thousand, four hundred forty-one".