3125646390 has 64 divisors (see below), whose sum is σ = 7797461760. Its totient is φ = 800903040.

The previous prime is 3125646347. The next prime is 3125646397. The reversal of 3125646390 is 936465213.

3125646390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125646397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175057 + ... + 192083.

It is an arithmetic number, because the mean of its divisors is an integer number (121835340).

Almost surely, 2^3125646390 is an apocalyptic number.

3125646390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3125646390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3898730880).

3125646390 is an abundant number, since it is smaller than the sum of its proper divisors (4671815370).

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

3125646390 is a wasteful number, since it uses less digits than its factorization.

3125646390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17277.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 3125646390 is about 55907.4806264779. The cubic root of 3125646390 is about 1462.1096651344.

The spelling of 3125646390 in words is "three billion, one hundred twenty-five million, six hundred forty-six thousand, three hundred ninety".