3646251258 has 64 divisors (see below), whose sum is σ = 8297372160. Its totient is φ = 1060157952.

The previous prime is 3646251233. The next prime is 3646251269. The reversal of 3646251258 is 8521526463.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89166 + ... + 123462.

It is an arithmetic number, because the mean of its divisors is an integer number (129646440).

Almost surely, 2^3646251258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3646251258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4148686080).

3646251258 is an abundant number, since it is smaller than the sum of its proper divisors (4651120902).

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

3646251258 is a wasteful number, since it uses less digits than its factorization.

3646251258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34391.

The product of its digits is 345600, while the sum is 42.

The square root of 3646251258 is about 60384.1970883111. The cubic root of 3646251258 is about 1539.1544323629.

The spelling of 3646251258 in words is "three billion, six hundred forty-six million, two hundred fifty-one thousand, two hundred fifty-eight".