1421915216 has 10 divisors (see below), whose sum is σ = 2754960762. Its totient is φ = 710957600.

The previous prime is 1421915213. The next prime is 1421915239. The reversal of 1421915216 is 6125191241.

It can be written as a sum of positive squares in only one way, i.e., 1030666816 + 391248400 = 32104^2 + 19780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421915213) by changing a digit.

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 as a sum of consecutive naturals, namely, 44434835 + ... + 44434866.

Almost surely, 2^1421915216 is an apocalyptic number.

1421915216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1421915216 is a deficient number, since it is larger than the sum of its proper divisors (1333045546).

1421915216 is an equidigital number, since it uses as much as digits as its factorization.

1421915216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88869709 (or 88869703 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 1421915216 is about 37708.2910776927. The cubic root of 1421915216 is about 1124.4959627845.

The spelling of 1421915216 in words is "one billion, four hundred twenty-one million, nine hundred fifteen thousand, two hundred sixteen".