1294741678 has 4 divisors (see below), whose sum is σ = 1942112520. Its totient is φ = 647370838.

The previous prime is 1294741673. The next prime is 1294741687. The reversal of 1294741678 is 8761474921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8761474921 = 19 ⋅461130259.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1294741673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323685418 + ... + 323685421.

It is an arithmetic number, because the mean of its divisors is an integer number (485528130).

Almost surely, 2^1294741678 is an apocalyptic number.

1294741678 is a deficient number, since it is larger than the sum of its proper divisors (647370842).

1294741678 is an equidigital number, since it uses as much as digits as its factorization.

1294741678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647370841.

The product of its digits is 677376, while the sum is 49.

The square root of 1294741678 is about 35982.5190613442. The cubic root of 1294741678 is about 1089.9193829780.

The spelling of 1294741678 in words is "one billion, two hundred ninety-four million, seven hundred forty-one thousand, six hundred seventy-eight".