966421019 has 8 divisors (see below), whose sum is σ = 992944560. Its totient is φ = 939918816.

The previous prime is 966421009. The next prime is 966421037. The reversal of 966421019 is 910124669.

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

It is a cyclic number.

It is not a de Polignac number, because 966421019 - 2¹⁶ = 966355483 is a prime.

It is a super-2 number, since 2×966421019² = 1867939171929996722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (966421009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139172 + ... + 145950.

It is an arithmetic number, because the mean of its divisors is an integer number (124118070).

Almost surely, 2^966421019 is an apocalyptic number.

966421019 is a deficient number, since it is larger than the sum of its proper divisors (26523541).

966421019 is a wasteful number, since it uses less digits than its factorization.

966421019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10669.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 966421019 is about 31087.3128301563. The cubic root of 966421019 is about 988.6793324286.

The spelling of 966421019 in words is "nine hundred sixty-six million, four hundred twenty-one thousand, nineteen".