6424529378 has 4 divisors (see below), whose sum is σ = 9636794070. Its totient is φ = 3212264688.

The previous prime is 6424529357. The next prime is 6424529393. The reversal of 6424529378 is 8739254246.

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., 6385128649 + 39400729 = 79907^2 + 6277^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606132343 + ... + 1606132346.

Almost surely, 2^6424529378 is an apocalyptic number.

6424529378 is a deficient number, since it is larger than the sum of its proper divisors (3212264692).

6424529378 is a wasteful number, since it uses less digits than its factorization.

6424529378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212264691.

The product of its digits is 2903040, while the sum is 50.

The square root of 6424529378 is about 80153.1619962681. The cubic root of 6424529378 is about 1859.0044946462.

The spelling of 6424529378 in words is "six billion, four hundred twenty-four million, five hundred twenty-nine thousand, three hundred seventy-eight".