966319381 has 4 divisors (see below), whose sum is σ = 968167552. Its totient is φ = 964471212.

The previous prime is 966319363. The next prime is 966319397. The reversal of 966319381 is 183913669.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183913669 = 31 ⋅5932699.

It is a cyclic number.

It is not a de Polignac number, because 966319381 - 2¹³ = 966311189 is a prime.

It is a super-2 number, since 2×966319381² = 1867546292192446322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966319181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923301 + ... + 924346.

It is an arithmetic number, because the mean of its divisors is an integer number (242041888).

Almost surely, 2^966319381 is an apocalyptic number.

It is an amenable number.

966319381 is a deficient number, since it is larger than the sum of its proper divisors (1848171).

966319381 is a wasteful number, since it uses less digits than its factorization.

966319381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848170.

The product of its digits is 209952, while the sum is 46.

The square root of 966319381 is about 31085.6780688471. The cubic root of 966319381 is about 988.6446715817.

The spelling of 966319381 in words is "nine hundred sixty-six million, three hundred nineteen thousand, three hundred eighty-one".