196657451 has 4 divisors (see below), whose sum is σ = 196725000. Its totient is φ = 196589904.

The previous prime is 196657441. The next prime is 196657463. The reversal of 196657451 is 154756691.

196657451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 196657451 - 2¹⁸ = 196395307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196657421) 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, 29201 + ... + 35298.

It is an arithmetic number, because the mean of its divisors is an integer number (49181250).

Almost surely, 2^196657451 is an apocalyptic number.

196657451 is a deficient number, since it is larger than the sum of its proper divisors (67549).

196657451 is an equidigital number, since it uses as much as digits as its factorization.

196657451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67548.

The product of its digits is 226800, while the sum is 44.

The square root of 196657451 is about 14023.4607354961. The cubic root of 196657451 is about 581.5273369381.

The spelling of 196657451 in words is "one hundred ninety-six million, six hundred fifty-seven thousand, four hundred fifty-one".