196154873 has 2 divisors, whose sum is σ = 196154874. Its totient is φ = 196154872.

The previous prime is 196154851. The next prime is 196154953. The reversal of 196154873 is 378451691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133934329 + 62220544 = 11573^2 + 7888^2 .

It is a cyclic number.

It is not a de Polignac number, because 196154873 - 2⁸ = 196154617 is a prime.

It is a super-2 number, since 2×196154873² = 76953468403292258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (196154473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98077436 + 98077437.

It is an arithmetic number, because the mean of its divisors is an integer number (98077437).

Almost surely, 2^196154873 is an apocalyptic number.

It is an amenable number.

196154873 is a deficient number, since it is larger than the sum of its proper divisors (1).

196154873 is an equidigital number, since it uses as much as digits as its factorization.

196154873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 196154873 is about 14005.5300863623. The cubic root of 196154873 is about 581.0315303675.

The spelling of 196154873 in words is "one hundred ninety-six million, one hundred fifty-four thousand, eight hundred seventy-three".