4091649156 has 81 divisors (see below), whose sum is σ = 12039301911. Its totient is φ = 1168275024.

The previous prime is 4091649143. The next prime is 4091649157. The reversal of 4091649156 is 6519461904.

It is a happy number.

The square root of 4091649156 is 63966.

It is a perfect power (a square), and thus also a powerful number.

4091649156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (4091649157) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2685811 + ... + 2687333.

Almost surely, 2^4091649156 is an apocalyptic number.

4091649156 is the 63966-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4091649156

4091649156 is an abundant number, since it is smaller than the sum of its proper divisors (7947652755).

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

4091649156 is a wasteful number, since it uses less digits than its factorization.

4091649156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The cubic root of 4091649156 is about 1599.4332831479.

The spelling of 4091649156 in words is "four billion, ninety-one million, six hundred forty-nine thousand, one hundred fifty-six".