1421975616 has 56 divisors (see below), whose sum is σ = 3768876384. Its totient is φ = 473164800.

The previous prime is 1421975609. The next prime is 1421975623. The reversal of 1421975616 is 6165791241.

It is an interprime number because it is at equal distance from previous prime (1421975609) and next prime (1421975623).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109231 + ... + 121553.

It is an arithmetic number, because the mean of its divisors is an integer number (67301364).

Almost surely, 2^1421975616 is an apocalyptic number.

1421975616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1421975616 is an abundant number, since it is smaller than the sum of its proper divisors (2346900768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421975616 is a wasteful number, since it uses less digits than its factorization.

1421975616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939 (or 12929 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 1421975616 is about 37709.0919540633. The cubic root of 1421975616 is about 1124.5118846420.

The spelling of 1421975616 in words is "one billion, four hundred twenty-one million, nine hundred seventy-five thousand, six hundred sixteen".