1421938898 has 8 divisors (see below), whose sum is σ = 2135149308. Its totient is φ = 710222464.

The previous prime is 1421938883. The next prime is 1421938909. The reversal of 1421938898 is 8988391241.

It can be written as a sum of positive squares in 2 ways, for example, as 1200137449 + 221801449 = 34643^2 + 14893^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371111 + ... + 374922.

Almost surely, 2^1421938898 is an apocalyptic number.

1421938898 is a deficient number, since it is larger than the sum of its proper divisors (713210410).

1421938898 is an equidigital number, since it uses as much as digits as its factorization.

1421938898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746988.

The product of its digits is 995328, while the sum is 53.

The square root of 1421938898 is about 37708.6050922067. The cubic root of 1421938898 is about 1124.5022055772.

The spelling of 1421938898 in words is "one billion, four hundred twenty-one million, nine hundred thirty-eight thousand, eight hundred ninety-eight".