3978065758 has 8 divisors (see below), whose sum is σ = 6281156520. Its totient is φ = 1884346920.

The previous prime is 3978065753. The next prime is 3978065761. The reversal of 3978065758 is 8575608793.

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

It is a super-2 number, since 2×3978065758² = 31650014349944229128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978065753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52342933 + ... + 52343008.

It is an arithmetic number, because the mean of its divisors is an integer number (785144565).

Almost surely, 2^3978065758 is an apocalyptic number.

3978065758 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3978065758 is a deficient number, since it is larger than the sum of its proper divisors (2303090762).

3978065758 is a wasteful number, since it uses less digits than its factorization.

3978065758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104685962.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The square root of 3978065758 is about 63071.9094209142. The cubic root of 3978065758 is about 1584.4941955994.

The spelling of 3978065758 in words is "three billion, nine hundred seventy-eight million, sixty-five thousand, seven hundred fifty-eight".