1863893725 has 6 divisors (see below), whose sum is σ = 2311228250. Its totient is φ = 1491114960.

The previous prime is 1863893701. The next prime is 1863893729. The reversal of 1863893725 is 5273983681.

It can be written as a sum of positive squares in 3 ways, for example, as 64352484 + 1799541241 = 8022^2 + 42421^2 .

It is not a de Polignac number, because 1863893725 - 2¹¹ = 1863891677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1863893729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37277850 + ... + 37277899.

Almost surely, 2^1863893725 is an apocalyptic number.

It is an amenable number.

1863893725 is a deficient number, since it is larger than the sum of its proper divisors (447334525).

1863893725 is an equidigital number, since it uses as much as digits as its factorization.

1863893725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74555759 (or 74555754 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 1863893725 is about 43172.8354987254. The cubic root of 1863893725 is about 1230.6665092380. Note that the first 3 decimals are identical.

The spelling of 1863893725 in words is "one billion, eight hundred sixty-three million, eight hundred ninety-three thousand, seven hundred twenty-five".