1421431619 has 2 divisors, whose sum is σ = 1421431620. Its totient is φ = 1421431618.

The previous prime is 1421431603. The next prime is 1421431637. The reversal of 1421431619 is 9161341241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421431619 - 2⁴ = 1421431603 is a prime.

It is a super-2 number, since 2×1421431619² = 4040935694985922322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421431639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710715809 + 710715810.

It is an arithmetic number, because the mean of its divisors is an integer number (710715810).

Almost surely, 2^1421431619 is an apocalyptic number.

1421431619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421431619 is an equidigital number, since it uses as much as digits as its factorization.

1421431619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 1421431619 is about 37701.8781892892. The cubic root of 1421431619 is about 1124.3684670123.

The spelling of 1421431619 in words is "one billion, four hundred twenty-one million, four hundred thirty-one thousand, six hundred nineteen".