1421438813 has 8 divisors (see below), whose sum is σ = 1452414720. Its totient is φ = 1390493520.

The previous prime is 1421438761. The next prime is 1421438819. The reversal of 1421438813 is 3188341241.

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 1421438813 - 2¹² = 1421434717 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 (1421438819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103568 + ... + 116486.

It is an arithmetic number, because the mean of its divisors is an integer number (181551840).

Almost surely, 2^1421438813 is an apocalyptic number.

It is an amenable number.

1421438813 is a deficient number, since it is larger than the sum of its proper divisors (30975907).

1421438813 is a wasteful number, since it uses less digits than its factorization.

1421438813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15307.

The product of its digits is 18432, while the sum is 35.

The square root of 1421438813 is about 37701.9735955560. The cubic root of 1421438813 is about 1124.3703638542.

The spelling of 1421438813 in words is "one billion, four hundred twenty-one million, four hundred thirty-eight thousand, eight hundred thirteen".