1812025388 has 12 divisors (see below), whose sum is σ = 3171957432. Its totient is φ = 905751840.

The previous prime is 1812025387. The next prime is 1812025429. The reversal of 1812025388 is 8835202181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1812025387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49145 + ... + 77712.

It is an arithmetic number, because the mean of its divisors is an integer number (264329786).

Almost surely, 2^1812025388 is an apocalyptic number.

It is an amenable number.

1812025388 is a deficient number, since it is larger than the sum of its proper divisors (1359932044).

1812025388 is a wasteful number, since it uses less digits than its factorization.

1812025388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130432 (or 130430 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 1812025388 is about 42567.8915146146. The cubic root of 1812025388 is about 1219.1433088064.

The spelling of 1812025388 in words is "one billion, eight hundred twelve million, twenty-five thousand, three hundred eighty-eight".