1812740193 has 48 divisors (see below), whose sum is σ = 2994001920. Its totient is φ = 1046152800.

The previous prime is 1812740143. The next prime is 1812740197. The reversal of 1812740193 is 3910472181.

It is a happy number.

It is not a de Polignac number, because 1812740193 - 2⁹ = 1812739681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1812740197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 542538 + ... + 545868.

It is an arithmetic number, because the mean of its divisors is an integer number (62375040).

Almost surely, 2^1812740193 is an apocalyptic number.

It is an amenable number.

1812740193 is a deficient number, since it is larger than the sum of its proper divisors (1181261727).

1812740193 is a wasteful number, since it uses less digits than its factorization.

1812740193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1812740193 is about 42576.2867450885. The cubic root of 1812740193 is about 1219.3035963267.

The spelling of 1812740193 in words is "one billion, eight hundred twelve million, seven hundred forty thousand, one hundred ninety-three".