8378518402 has 8 divisors (see below), whose sum is σ = 12568259196. Its totient is φ = 4189098672.

The previous prime is 8378518373. The next prime is 8378518457. The reversal of 8378518402 is 2048158738.

It can be written as a sum of positive squares in 2 ways, for example, as 8377923961 + 594441 = 91531^2 + 771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8378518402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728 + ... + 129460.

Almost surely, 2^8378518402 is an apocalyptic number.

8378518402 is a deficient number, since it is larger than the sum of its proper divisors (4189740794).

8378518402 is a wasteful number, since it uses less digits than its factorization.

8378518402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160532.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 8378518402 is about 91534.2471537293. The cubic root of 8378518402 is about 2031.0583916814.

The spelling of 8378518402 in words is "eight billion, three hundred seventy-eight million, five hundred eighteen thousand, four hundred two".