7790689378 has 4 divisors (see below), whose sum is σ = 11686034070. Its totient is φ = 3895344688.

The previous prime is 7790689373. The next prime is 7790689381. The reversal of 7790689378 is 8739860977.

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., 7135687729 + 655001649 = 84473^2 + 25593^2 .

It is not an unprimeable number, because it can be changed into a prime (7790689373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1947672343 + ... + 1947672346.

Almost surely, 2^7790689378 is an apocalyptic number.

7790689378 is a deficient number, since it is larger than the sum of its proper divisors (3895344692).

7790689378 is a wasteful number, since it uses less digits than its factorization.

7790689378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3895344691.

The product of its (nonzero) digits is 32006016, while the sum is 64.

The square root of 7790689378 is about 88264.8819066791. The cubic root of 7790689378 is about 1982.4030763827.

The spelling of 7790689378 in words is "seven billion, seven hundred ninety million, six hundred eighty-nine thousand, three hundred seventy-eight".