1812770868 has 24 divisors (see below), whose sum is σ = 4277327040. Its totient is φ = 597467200.

The previous prime is 1812770833. The next prime is 1812770873. The reversal of 1812770868 is 8680772181.

It is a super-2 number, since 2×1812770868² = 6572276439738946848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847608 + ... + 849743.

It is an arithmetic number, because the mean of its divisors is an integer number (178221960).

Almost surely, 2^1812770868 is an apocalyptic number.

It is an amenable number.

1812770868 is an abundant number, since it is smaller than the sum of its proper divisors (2464556172).

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

1812770868 is a wasteful number, since it uses less digits than its factorization.

1812770868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697447 (or 1697445 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 48.

The square root of 1812770868 is about 42576.6469793008. The cubic root of 1812770868 is about 1219.3104739306.

The spelling of 1812770868 in words is "one billion, eight hundred twelve million, seven hundred seventy thousand, eight hundred sixty-eight".