2182151640 has 32 divisors (see below), whose sum is σ = 6546455280. Its totient is φ = 581907072.

The previous prime is 2182151599. The next prime is 2182151641. The reversal of 2182151640 is 461512812.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2182151598 and 2182151607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2182151641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9092179 + ... + 9092418.

Almost surely, 2^2182151640 is an apocalyptic number.

2182151640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2182151640 is an abundant number, since it is smaller than the sum of its proper divisors (4364303640).

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

2182151640 is a wasteful number, since it uses less digits than its factorization.

2182151640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18184611 (or 18184607 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 2182151640 is about 46713.5059699013. The cubic root of 2182151640 is about 1297.0647067256.

The spelling of 2182151640 in words is "two billion, one hundred eighty-two million, one hundred fifty-one thousand, six hundred forty".