2151350388 has 96 divisors (see below), whose sum is σ = 6104125440. Its totient is φ = 649836000.

The previous prime is 2151350363. The next prime is 2151350389. The reversal of 2151350388 is 8830531512.

2151350388 is a `hidden beast` number, since 21 + 51 + 3 + 503 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151350389) 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, 390493 + ... + 395963.

It is an arithmetic number, because the mean of its divisors is an integer number (63584640).

Almost surely, 2^2151350388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151350388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3052062720).

2151350388 is an abundant number, since it is smaller than the sum of its proper divisors (3952775052).

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

2151350388 is a wasteful number, since it uses less digits than its factorization.

2151350388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826 (or 5818 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2151350388 is about 46382.6517999995. The cubic root of 2151350388 is about 1290.9330405029.

The spelling of 2151350388 in words is "two billion, one hundred fifty-one million, three hundred fifty thousand, three hundred eighty-eight".