78341895 has 12 divisors (see below), whose sum is σ = 135792696. Its totient is φ = 41782320.

The previous prime is 78341891. The next prime is 78341917. The reversal of 78341895 is 59814387.

It is not a de Polignac number, because 78341895 - 2² = 78341891 is a prime.

It is a super-2 number, since 2×78341895² = 12274905024382050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1740931 = 78341895 / (7 + 8 + 3 + 4 + 1 + 8 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 78341895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78341891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 870421 + ... + 870510.

It is an arithmetic number, because the mean of its divisors is an integer number (11316058).

Almost surely, 2^78341895 is an apocalyptic number.

78341895 is a deficient number, since it is larger than the sum of its proper divisors (57450801).

78341895 is a wasteful number, since it uses less digits than its factorization.

78341895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740942 (or 1740939 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 78341895 is about 8851.0956948843. The cubic root of 78341895 is about 427.8892320422.

The spelling of 78341895 in words is "seventy-eight million, three hundred forty-one thousand, eight hundred ninety-five".