3146448438 has 144 divisors (see below), whose sum is σ = 8426486016. Its totient is φ = 829604160.

The previous prime is 3146448427. The next prime is 3146448479. The reversal of 3146448438 is 8348446413.

It is a junction number, because it is equal to n+sod(n) for n = 3146448393 and 3146448402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2436573 + ... + 2437863.

It is an arithmetic number, because the mean of its divisors is an integer number (58517264).

Almost surely, 2^3146448438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3146448438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4213243008).

3146448438 is an abundant number, since it is smaller than the sum of its proper divisors (5280037578).

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

3146448438 is a wasteful number, since it uses less digits than its factorization.

3146448438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1355 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The square root of 3146448438 is about 56093.2120492311. The cubic root of 3146448438 is about 1465.3460784351.

It can be divided in two parts, 3146 and 448438, that added together give a square (451584 = 672²).

The spelling of 3146448438 in words is "three billion, one hundred forty-six million, four hundred forty-eight thousand, four hundred thirty-eight".