196941257 has 4 divisors (see below), whose sum is σ = 197111760. Its totient is φ = 196770756.

The previous prime is 196941229. The next prime is 196941287. The reversal of 196941257 is 752149691.

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.

It is a cyclic number.

It is not a de Polignac number, because 196941257 - 2⁶ = 196941193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196941287) 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, 83507 + ... + 85832.

It is an arithmetic number, because the mean of its divisors is an integer number (49277940).

Almost surely, 2^196941257 is an apocalyptic number.

It is an amenable number.

196941257 is a deficient number, since it is larger than the sum of its proper divisors (170503).

196941257 is a wasteful number, since it uses less digits than its factorization.

196941257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170502.

The product of its digits is 136080, while the sum is 44.

The square root of 196941257 is about 14033.5760588668. The cubic root of 196941257 is about 581.8069460033.

The spelling of 196941257 in words is "one hundred ninety-six million, nine hundred forty-one thousand, two hundred fifty-seven".