130878394 has 4 divisors (see below), whose sum is σ = 196317594. Its totient is φ = 65439196.

The previous prime is 130878389. The next prime is 130878413. The reversal of 130878394 is 493878031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120231225 + 10647169 = 10965^2 + 3263^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 130878394.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32719597 + ... + 32719600.

Almost surely, 2^130878394 is an apocalyptic number.

130878394 is a deficient number, since it is larger than the sum of its proper divisors (65439200).

130878394 is an equidigital number, since it uses as much as digits as its factorization.

130878394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65439199.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 130878394 is about 11440.2095260533. The cubic root of 130878394 is about 507.7181072912.

The spelling of 130878394 in words is "one hundred thirty million, eight hundred seventy-eight thousand, three hundred ninety-four".