1825870641 has 16 divisors (see below), whose sum is σ = 2794543104. Its totient is φ = 1038755664.

The previous prime is 1825870639. The next prime is 1825870661. The reversal of 1825870641 is 1460785281.

It is not a de Polignac number, because 1825870641 - 2¹ = 1825870639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1825870593 and 1825870602.

It is not an unprimeable number, because it can be changed into a prime (1825870661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186745 + ... + 196278.

It is an arithmetic number, because the mean of its divisors is an integer number (174658944).

Almost surely, 2^1825870641 is an apocalyptic number.

It is an amenable number.

1825870641 is a deficient number, since it is larger than the sum of its proper divisors (968672463).

1825870641 is a wasteful number, since it uses less digits than its factorization.

1825870641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383260.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 1825870641 is about 42730.2075936918. The cubic root of 1825870641 is about 1222.2404947648.

The spelling of 1825870641 in words is "one billion, eight hundred twenty-five million, eight hundred seventy thousand, six hundred forty-one".