1418455421 has 8 divisors (see below), whose sum is σ = 1458807384. Its totient is φ = 1378209600.

The previous prime is 1418455411. The next prime is 1418455429. The reversal of 1418455421 is 1245548141.

It can be written as a sum of positive squares in 4 ways, for example, as 1210692025 + 207763396 = 34795^2 + 14414^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1418455421 - 2¹⁰ = 1418454397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1418455429) 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, 971 + ... + 53271.

It is an arithmetic number, because the mean of its divisors is an integer number (182350923).

Almost surely, 2^1418455421 is an apocalyptic number.

It is an amenable number.

1418455421 is a deficient number, since it is larger than the sum of its proper divisors (40351963).

1418455421 is an equidigital number, since it uses as much as digits as its factorization.

1418455421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53071.

The product of its digits is 25600, while the sum is 35.

The square root of 1418455421 is about 37662.3873513085. The cubic root of 1418455421 is about 1123.5831832682.

The spelling of 1418455421 in words is "one billion, four hundred eighteen million, four hundred fifty-five thousand, four hundred twenty-one".