1438381846 has 16 divisors (see below), whose sum is σ = 2434879440. Its totient is φ = 631264480.

The previous prime is 1438381837. The next prime is 1438381897. The reversal of 1438381846 is 6481838341.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1438381796 and 1438381805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126621 + ... + 1127896.

It is an arithmetic number, because the mean of its divisors is an integer number (152179965).

Almost surely, 2^1438381846 is an apocalyptic number.

1438381846 is a deficient number, since it is larger than the sum of its proper divisors (996497594).

1438381846 is a wasteful number, since it uses less digits than its factorization.

1438381846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254559.

The product of its digits is 442368, while the sum is 46.

The square root of 1438381846 is about 37926.0048779198. The cubic root of 1438381846 is about 1128.8200924495.

The spelling of 1438381846 in words is "one billion, four hundred thirty-eight million, three hundred eighty-one thousand, eight hundred forty-six".