4157982646 has 4 divisors (see below), whose sum is σ = 6236973972. Its totient is φ = 2078991322.

The previous prime is 4157982643. The next prime is 4157982671. The reversal of 4157982646 is 6462897514.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×4157982646² = 34577639368874322632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4157982593 and 4157982602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4157982641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039495660 + ... + 1039495663.

It is an arithmetic number, because the mean of its divisors is an integer number (1559243493).

Almost surely, 2^4157982646 is an apocalyptic number.

4157982646 is a deficient number, since it is larger than the sum of its proper divisors (2078991326).

4157982646 is a wasteful number, since it uses less digits than its factorization.

4157982646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078991325.

The product of its digits is 2903040, while the sum is 52.

The square root of 4157982646 is about 64482.4212169487. The cubic root of 4157982646 is about 1608.0302861696.

The spelling of 4157982646 in words is "four billion, one hundred fifty-seven million, nine hundred eighty-two thousand, six hundred forty-six".