3145454856 has 80 divisors (see below), whose sum is σ = 8891213100. Its totient is φ = 1038842496.

The previous prime is 3145454843. The next prime is 3145454887. The reversal of 3145454856 is 6584545413.

3145454856 is a `hidden beast` number, since 3 + 1 + 4 + 54 + 548 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3083580900 + 61873956 = 55530^2 + 7866^2 .

It is a super-2 number, since 2×3145454856² = 19787772502267961472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48366 + ... + 92898.

Almost surely, 2^3145454856 is an apocalyptic number.

3145454856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3145454856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4445606550).

3145454856 is an abundant number, since it is smaller than the sum of its proper divisors (5745758244).

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

3145454856 is a wasteful number, since it uses less digits than its factorization.

3145454856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44660 (or 44647 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The square root of 3145454856 is about 56084.3548237831. The cubic root of 3145454856 is about 1465.1918204100.

The spelling of 3145454856 in words is "three billion, one hundred forty-five million, four hundred fifty-four thousand, eight hundred fifty-six".