2151428830 has 32 divisors (see below), whose sum is σ = 4004847360. Its totient is φ = 831279360.

The previous prime is 2151428819. The next prime is 2151428831. The reversal of 2151428830 is 388241512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151428831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170292 + ... + 182488.

It is an arithmetic number, because the mean of its divisors is an integer number (125151480).

Almost surely, 2^2151428830 is an apocalyptic number.

2151428830 is a deficient number, since it is larger than the sum of its proper divisors (1853418530).

2151428830 is a wasteful number, since it uses less digits than its factorization.

2151428830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 2151428830 is about 46383.4973886187. The cubic root of 2151428830 is about 1290.9487302048.

The spelling of 2151428830 in words is "two billion, one hundred fifty-one million, four hundred twenty-eight thousand, eight hundred thirty".