195792749 has 2 divisors, whose sum is σ = 195792750. Its totient is φ = 195792748.

The previous prime is 195792743. The next prime is 195792781. The reversal of 195792749 is 947297591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111978724 + 83814025 = 10582^2 + 9155^2 .

It is a cyclic number.

It is not a de Polignac number, because 195792749 - 2⁴ = 195792733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195792749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195792743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97896374 + 97896375.

It is an arithmetic number, because the mean of its divisors is an integer number (97896375).

Almost surely, 2^195792749 is an apocalyptic number.

It is an amenable number.

195792749 is a deficient number, since it is larger than the sum of its proper divisors (1).

195792749 is an equidigital number, since it uses as much as digits as its factorization.

195792749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 53.

The square root of 195792749 is about 13992.5962208591. The cubic root of 195792749 is about 580.6737602222.

The spelling of 195792749 in words is "one hundred ninety-five million, seven hundred ninety-two thousand, seven hundred forty-nine".