196542731 has 8 divisors (see below), whose sum is σ = 245040384. Its totient is φ = 153150120.

The previous prime is 196542719. The next prime is 196542769. The reversal of 196542731 is 137245691.

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-196542731 is a prime.

It is a super-2 number, since 2×196542731² = 77258090217876722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196542701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276175 + ... + 1276328.

It is an arithmetic number, because the mean of its divisors is an integer number (30630048).

Almost surely, 2^196542731 is an apocalyptic number.

196542731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196542731 is a deficient number, since it is larger than the sum of its proper divisors (48497653).

196542731 is a wasteful number, since it uses less digits than its factorization.

196542731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552521.

The product of its digits is 45360, while the sum is 38.

The square root of 196542731 is about 14019.3698503178. The cubic root of 196542731 is about 581.4142370746.

The spelling of 196542731 in words is "one hundred ninety-six million, five hundred forty-two thousand, seven hundred thirty-one".