1966367969 has 8 divisors (see below), whose sum is σ = 2070347040. Its totient is φ = 1862437536.

The previous prime is 1966367927. The next prime is 1966367971. The reversal of 1966367969 is 9697636691.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1966367969 is a prime.

It is a super-2 number, since 2×1966367969² = 7733205979018369922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1966327969) 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, 95237 + ... + 114029.

It is an arithmetic number, because the mean of its divisors is an integer number (258793380).

Almost surely, 2^1966367969 is an apocalyptic number.

1966367969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1966367969 is a deficient number, since it is larger than the sum of its proper divisors (103979071).

1966367969 is a wasteful number, since it uses less digits than its factorization.

1966367969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24319.

The product of its digits is 19840464, while the sum is 62.

The square root of 1966367969 is about 44343.7478005637. The cubic root of 1966367969 is about 1252.8188054108.

The spelling of 1966367969 in words is "one billion, nine hundred sixty-six million, three hundred sixty-seven thousand, nine hundred sixty-nine".