195157379 has 4 divisors (see below), whose sum is σ = 205428840. Its totient is φ = 184885920.

The previous prime is 195157367. The next prime is 195157387. The reversal of 195157379 is 973751591.

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 195157379 - 2⁴ = 195157363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195157579) 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, 5135702 + ... + 5135739.

It is an arithmetic number, because the mean of its divisors is an integer number (51357210).

Almost surely, 2^195157379 is an apocalyptic number.

195157379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

195157379 is a deficient number, since it is larger than the sum of its proper divisors (10271461).

195157379 is a wasteful number, since it uses less digits than its factorization.

195157379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271460.

The product of its digits is 297675, while the sum is 47.

The square root of 195157379 is about 13969.8739793886. The cubic root of 195157379 is about 580.0449618335.

It can be divided in two parts, 19 and 5157379, that multiplied together give a square (97990201 = 9899²).

The spelling of 195157379 in words is "one hundred ninety-five million, one hundred fifty-seven thousand, three hundred seventy-nine".