7834988386 has 4 divisors (see below), whose sum is σ = 11752482582. Its totient is φ = 3917494192.

The previous prime is 7834988383. The next prime is 7834988389. The reversal of 7834988386 is 6838894387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6838894387 = 13 ⋅526068799.

It is an interprime number because it is at equal distance from previous prime (7834988383) and next prime (7834988389).

It can be written as a sum of positive squares in only one way, i.e., 7773067225 + 61921161 = 88165^2 + 7869^2 .

It is a super-2 number, since 2×7834988386² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7834988383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1958747095 + ... + 1958747098.

Almost surely, 2^7834988386 is an apocalyptic number.

7834988386 is a deficient number, since it is larger than the sum of its proper divisors (3917494196).

7834988386 is a wasteful number, since it uses less digits than its factorization.

7834988386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917494195.

The product of its digits is 55738368, while the sum is 64.

The square root of 7834988386 is about 88515.4697552919. The cubic root of 7834988386 is about 1986.1533890824.

The spelling of 7834988386 in words is "seven billion, eight hundred thirty-four million, nine hundred eighty-eight thousand, three hundred eighty-six".