7975210378 has 4 divisors (see below), whose sum is σ = 11962815570. Its totient is φ = 3987605188.

The previous prime is 7975210339. The next prime is 7975210409. The reversal of 7975210378 is 8730125797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8730125797 = 239 ⋅36527723.

It can be written as a sum of positive squares in only one way, i.e., 5371863849 + 2603346529 = 73293^2 + 51023^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993802593 + ... + 1993802596.

Almost surely, 2^7975210378 is an apocalyptic number.

7975210378 is a deficient number, since it is larger than the sum of its proper divisors (3987605192).

7975210378 is a wasteful number, since it uses less digits than its factorization.

7975210378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987605191.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 7975210378 is about 89304.0333803575. The cubic root of 7975210378 is about 1997.9320607172.

The spelling of 7975210378 in words is "seven billion, nine hundred seventy-five million, two hundred ten thousand, three hundred seventy-eight".