1825801632 has 72 divisors (see below), whose sum is σ = 5497557156. Its totient is φ = 572798976.

The previous prime is 1825801597. The next prime is 1825801639. The reversal of 1825801632 is 2361085281.

It is a happy number.

1825801632 is a `hidden beast` number, since 18 + 2 + 5 + 8 + 0 + 1 + 632 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1811694096 + 14107536 = 42564^2 + 3756^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1825801639) 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, 181563 + ... + 191354.

Almost surely, 2^1825801632 is an apocalyptic number.

1825801632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1825801632 is an abundant number, since it is smaller than the sum of its proper divisors (3671755524).

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

1825801632 is a wasteful number, since it uses less digits than its factorization.

1825801632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372950 (or 372939 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1825801632 is about 42729.4000893998. The cubic root of 1825801632 is about 1222.2250963287.

The spelling of 1825801632 in words is "one billion, eight hundred twenty-five million, eight hundred one thousand, six hundred thirty-two".