1908641344 has 63 divisors (see below), whose sum is σ = 3908361627. Its totient is φ = 924787584.

The previous prime is 1908641321. The next prime is 1908641431. The reversal of 1908641344 is 4431468091.

The square root of 1908641344 is 43688.

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

It is a super-2 number, since 2×1908641344² = 7285823560052252672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1908641297 and 1908641306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15028609 + ... + 15028735.

Almost surely, 2^1908641344 is an apocalyptic number.

1908641344 is the 43688-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1908641344

1908641344 is an abundant number, since it is smaller than the sum of its proper divisors (1999720283).

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

1908641344 is an frugal number, since it uses more digits than its factorization.

1908641344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The cubic root of 1908641344 is about 1240.4371819546.

Multiplying 1908641344 by its product of nonzero digits (82944), we get a square (158310347636736 = 12582144²).

The spelling of 1908641344 in words is "one billion, nine hundred eight million, six hundred forty-one thousand, three hundred forty-four".