1438410040 has 16 divisors (see below), whose sum is σ = 3236422680. Its totient is φ = 575364000.

The previous prime is 1438410019. The next prime is 1438410059. The reversal of 1438410040 is 400148341.

It is a junction number, because it is equal to n+sod(n) for n = 1438409987 and 1438410014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17980086 + ... + 17980165.

Almost surely, 2^1438410040 is an apocalyptic number.

1438410040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1438410040 is an abundant number, since it is smaller than the sum of its proper divisors (1798012640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1438410040 is a wasteful number, since it uses less digits than its factorization.

1438410040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35960262 (or 35960258 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1438410040 is about 37926.3765735668. The cubic root of 1438410040 is about 1128.8274678081.

Adding to 1438410040 its reverse (400148341), we get a palindrome (1838558381).

The spelling of 1438410040 in words is "one billion, four hundred thirty-eight million, four hundred ten thousand, forty".