1421951589 has 12 divisors (see below), whose sum is σ = 2058572256. Its totient is φ = 945825192.

The previous prime is 1421951581. The next prime is 1421951591. The reversal of 1421951589 is 9851591241.

1421951589 is a `hidden beast` number, since 1 + 4 + 2 + 19 + 51 + 589 = 666.

It is not a de Polignac number, because 1421951589 - 2³ = 1421951581 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421951581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174337 + ... + 182310.

It is an arithmetic number, because the mean of its divisors is an integer number (171547688).

Almost surely, 2^1421951589 is an apocalyptic number.

It is an amenable number.

1421951589 is a deficient number, since it is larger than the sum of its proper divisors (636620667).

1421951589 is a wasteful number, since it uses less digits than its factorization.

1421951589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357096 (or 357093 counting only the distinct ones).

The product of its digits is 129600, while the sum is 45.

The square root of 1421951589 is about 37708.7733690716. The cubic root of 1421951589 is about 1124.5055510128.

The spelling of 1421951589 in words is "one billion, four hundred twenty-one million, nine hundred fifty-one thousand, five hundred eighty-nine".