1943487225 has 27 divisors (see below), whose sum is σ = 3482186383. Its totient is φ = 1036173840.

The previous prime is 1943487163. The next prime is 1943487241. The reversal of 1943487225 is 5227843491.

The square root of 1943487225 is 44085.

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., 699655401 + 1243831824 = 26451^2 + 35268^2 .

It is not a de Polignac number, because 1943487225 - 2¹⁹ = 1942962937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 659806 + ... + 662744.

Almost surely, 2^1943487225 is an apocalyptic number.

1943487225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1943487225 is the 44085-th square number.

1943487225 is the 22043-rd centered octagonal number.

It is an amenable number.

1943487225 is a deficient number, since it is larger than the sum of its proper divisors (1538699158).

1943487225 is an frugal number, since it uses more digits than its factorization.

1943487225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5894 (or 2947 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The cubic root of 1943487225 is about 1247.9405501297.

The spelling of 1943487225 in words is "one billion, nine hundred forty-three million, four hundred eighty-seven thousand, two hundred twenty-five".