1818415752492 has 24 divisors (see below), whose sum is σ = 4294090213056. Its totient is φ = 598835709328.

The previous prime is 1818415752481. The next prime is 1818415752497. The reversal of 1818415752492 is 2942575148181.

It is a super-2 number, since 2×1818415752492² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1818415752497) 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, 912858318 + ... + 912860309.

It is an arithmetic number, because the mean of its divisors is an integer number (178920425544).

Almost surely, 2^{1818415752492} is an apocalyptic number.

1818415752492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1818415752492 is an abundant number, since it is smaller than the sum of its proper divisors (2475674460564).

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

1818415752492 is a wasteful number, since it uses less digits than its factorization.

1818415752492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825718717 (or 1825718715 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 57.

The spelling of 1818415752492 in words is "one trillion, eight hundred eighteen billion, four hundred fifteen million, seven hundred fifty-two thousand, four hundred ninety-two".