1421736869 has 8 divisors (see below), whose sum is σ = 1664472768. Its totient is φ = 1188908640.

The previous prime is 1421736859. The next prime is 1421736917. The reversal of 1421736869 is 9686371241.

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 1421736869 - 2¹² = 1421732773 is a prime.

It is a super-2 number, since 2×1421736869² = 4042671449347846322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421736839) 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, 2476607 + ... + 2477180.

It is an arithmetic number, because the mean of its divisors is an integer number (208059096).

Almost surely, 2^1421736869 is an apocalyptic number.

It is an amenable number.

1421736869 is a deficient number, since it is larger than the sum of its proper divisors (242735899).

1421736869 is an equidigital number, since it uses as much as digits as its factorization.

1421736869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953835.

The product of its digits is 435456, while the sum is 47.

The square root of 1421736869 is about 37705.9261787852. The cubic root of 1421736869 is about 1124.4489466510.

The spelling of 1421736869 in words is "one billion, four hundred twenty-one million, seven hundred thirty-six thousand, eight hundred sixty-nine".