2149786530 has 96 divisors (see below), whose sum is σ = 5891661360. Its totient is φ = 543029760.

The previous prime is 2149786523. The next prime is 2149786549. The reversal of 2149786530 is 356879412.

2149786530 is a `hidden beast` number, since 2 + 1 + 49 + 78 + 6 + 530 = 666.

2149786530 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1503965961 + 645820569 = 38781^2 + 25413^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

2149786530 is strictly pandigital in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130560 + ... + 146100.

It is a 1-persistent number, because it is pandigital, but 2⋅2149786530 = 4299573060 is not.

Almost surely, 2^2149786530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2149786530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2945830680).

2149786530 is an abundant number, since it is smaller than the sum of its proper divisors (3741874830).

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

2149786530 is a wasteful number, since it uses less digits than its factorization.

2149786530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15636 (or 15633 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2149786530 is about 46365.7905141280. The cubic root of 2149786530 is about 1290.6201633214.

The spelling of 2149786530 in words is "two billion, one hundred forty-nine million, seven hundred eighty-six thousand, five hundred thirty".