4356645646 has 4 divisors (see below), whose sum is σ = 6534968472. Its totient is φ = 2178322822.

The previous prime is 4356645619. The next prime is 4356645659. The reversal of 4356645646 is 6465466534.

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

It is a super-2 number, since 2×4356645646² = 37960722569621514632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4356645646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089161410 + ... + 1089161413.

It is an arithmetic number, because the mean of its divisors is an integer number (1633742118).

Almost surely, 2^4356645646 is an apocalyptic number.

4356645646 is a deficient number, since it is larger than the sum of its proper divisors (2178322826).

4356645646 is a wasteful number, since it uses less digits than its factorization.

4356645646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178322825.

The product of its digits is 6220800, while the sum is 49.

The square root of 4356645646 is about 66004.8910763437. The cubic root of 4356645646 is about 1633.2427754966.

The spelling of 4356645646 in words is "four billion, three hundred fifty-six million, six hundred forty-five thousand, six hundred forty-six".