1451218018049 has 4 divisors (see below), whose sum is σ = 1451294776320. Its totient is φ = 1451141259780.

The previous prime is 1451218018031. The next prime is 1451218018051. The reversal of 1451218018049 is 9408108121541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1451218018049 - 2²⁰ = 1451216969473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1451218068049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38350769 + ... + 38388590.

It is an arithmetic number, because the mean of its divisors is an integer number (362823694080).

Almost surely, 2^{1451218018049} is an apocalyptic number.

It is an amenable number.

1451218018049 is a deficient number, since it is larger than the sum of its proper divisors (76758271).

1451218018049 is an equidigital number, since it uses as much as digits as its factorization.

1451218018049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76758270.

The product of its (nonzero) digits is 92160, while the sum is 44.

The spelling of 1451218018049 in words is "one trillion, four hundred fifty-one billion, two hundred eighteen million, eighteen thousand, forty-nine".