1818463749 has 8 divisors (see below), whose sum is σ = 2426729472. Its totient is φ = 1211253600.

The previous prime is 1818463729. The next prime is 1818463811. The reversal of 1818463749 is 9473648181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1818463749 - 2¹² = 1818459653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818463729) 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, 259864 + ... + 266769.

It is an arithmetic number, because the mean of its divisors is an integer number (303341184).

Almost surely, 2^1818463749 is an apocalyptic number.

It is an amenable number.

1818463749 is a deficient number, since it is larger than the sum of its proper divisors (608265723).

1818463749 is a wasteful number, since it uses less digits than its factorization.

1818463749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527787.

The product of its digits is 1161216, while the sum is 51.

The square root of 1818463749 is about 42643.4490748579. The cubic root of 1818463749 is about 1220.5855267399.

The spelling of 1818463749 in words is "one billion, eight hundred eighteen million, four hundred sixty-three thousand, seven hundred forty-nine".