3946782690 has 48 divisors (see below), whose sum is σ = 10298219256. Its totient is φ = 1048723200.

The previous prime is 3946782677. The next prime is 3946782691. The reversal of 3946782690 is 962876493.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3946729329 + 53361 = 62823^2 + 231^2 .

It is a super-2 number, since 2×3946782690² = 31154187204167272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3946782691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52741 + ... + 103320.

Almost surely, 2^3946782690 is an apocalyptic number.

3946782690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3946782690 is an abundant number, since it is smaller than the sum of its proper divisors (6351436566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3946782690 is a wasteful number, since it uses less digits than its factorization.

3946782690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156355 (or 156352 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 3946782690 is about 62823.4246917501. The cubic root of 3946782690 is about 1580.3298315314.

The spelling of 3946782690 in words is "three billion, nine hundred forty-six million, seven hundred eighty-two thousand, six hundred ninety".