196532391 has 32 divisors (see below), whose sum is σ = 298080000. Its totient is φ = 114087680.

The previous prime is 196532383. The next prime is 196532411. The reversal of 196532391 is 193235691.

196532391 = T₄₄₄ + T₄₄₅ + ... + T₁₀₈₁.

It is a cyclic number.

It is not a de Polignac number, because 196532391 - 2³ = 196532383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196532351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130360 + ... + 131858.

It is an arithmetic number, because the mean of its divisors is an integer number (9315000).

Almost surely, 2^196532391 is an apocalyptic number.

196532391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196532391 is a deficient number, since it is larger than the sum of its proper divisors (101547609).

196532391 is a wasteful number, since it uses less digits than its factorization.

196532391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679.

The product of its digits is 43740, while the sum is 39.

The square root of 196532391 is about 14019.0010699764. The cubic root of 196532391 is about 581.4040409397.

The spelling of 196532391 in words is "one hundred ninety-six million, five hundred thirty-two thousand, three hundred ninety-one".