1906894224 has 75 divisors (see below), whose sum is σ = 5523658833. Its totient is φ = 635107392.

The previous prime is 1906894193. The next prime is 1906894259. The reversal of 1906894224 is 4224986091.

The square root of 1906894224 is 43668.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 77792400 + 1829101824 = 8820^2 + 42768^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1906894224.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1571442 + ... + 1572654.

Almost surely, 2^1906894224 is an apocalyptic number.

1906894224 is the 43668-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906894224

1906894224 is an abundant number, since it is smaller than the sum of its proper divisors (3616764609).

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

1906894224 is an frugal number, since it uses more digits than its factorization.

1906894224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The cubic root of 1906894224 is about 1240.0585785715.

The spelling of 1906894224 in words is "one billion, nine hundred six million, eight hundred ninety-four thousand, two hundred twenty-four".