1825344621 has 12 divisors (see below), whose sum is σ = 2791703772. Its totient is φ = 1145314176.

The previous prime is 1825344617. The next prime is 1825344659. The reversal of 1825344621 is 1264435281.

It is a happy number.

1825344621 is a `hidden beast` number, since 1 + 8 + 25 + 3 + 4 + 4 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1071842121 + 753502500 = 32739^2 + 27450^2 .

It is not a de Polignac number, because 1825344621 - 2² = 1825344617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825354621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5965026 + ... + 5965331.

It is an arithmetic number, because the mean of its divisors is an integer number (232641981).

Almost surely, 2^1825344621 is an apocalyptic number.

It is an amenable number.

1825344621 is a deficient number, since it is larger than the sum of its proper divisors (966359151).

1825344621 is a wasteful number, since it uses less digits than its factorization.

1825344621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11930380 (or 11930377 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1825344621 is about 42724.0520199103. The cubic root of 1825344621 is about 1222.1231106374.

The spelling of 1825344621 in words is "one billion, eight hundred twenty-five million, three hundred forty-four thousand, six hundred twenty-one".