1812893572 has 24 divisors (see below), whose sum is σ = 3699785600. Its totient is φ = 776953800.

The previous prime is 1812893561. The next prime is 1812893573. The reversal of 1812893572 is 2753982181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1812893573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659304 + ... + 662047.

Almost surely, 2^1812893572 is an apocalyptic number.

It is an amenable number.

1812893572 is an abundant number, since it is smaller than the sum of its proper divisors (1886892028).

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

1812893572 is a wasteful number, since it uses less digits than its factorization.

1812893572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321376 (or 1321360 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 1812893572 is about 42578.0879326444. The cubic root of 1812893572 is about 1219.3379844670.

The spelling of 1812893572 in words is "one billion, eight hundred twelve million, eight hundred ninety-three thousand, five hundred seventy-two".