196139369 has 4 divisors (see below), whose sum is σ = 196404096. Its totient is φ = 195874644.

The previous prime is 196139327. The next prime is 196139381. The reversal of 196139369 is 963931691.

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: 963931691 = 491 ⋅1963201.

It is a cyclic number.

It is not a de Polignac number, because 196139369 - 2¹⁶ = 196073833 is a prime.

It is a super-2 number, since 2×196139369² = 76941304143436322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (196139969) 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, 131249 + ... + 132734.

It is an arithmetic number, because the mean of its divisors is an integer number (49101024).

Almost surely, 2^196139369 is an apocalyptic number.

It is an amenable number.

196139369 is a deficient number, since it is larger than the sum of its proper divisors (264727).

196139369 is an equidigital number, since it uses as much as digits as its factorization.

196139369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264726.

The product of its digits is 236196, while the sum is 47.

The square root of 196139369 is about 14004.9765797733. The cubic root of 196139369 is about 581.0162218002.

It can be divided in two parts, 19613 and 9369, that added together give a palindrome (28982).

The spelling of 196139369 in words is "one hundred ninety-six million, one hundred thirty-nine thousand, three hundred sixty-nine".