2151864350 has 12 divisors (see below), whose sum is σ = 4002467784. Its totient is φ = 860745720.

The previous prime is 2151864347. The next prime is 2151864353. The reversal of 2151864350 is 534681512.

It is an interprime number because it is at equal distance from previous prime (2151864347) and next prime (2151864353).

It is a self number, because there is not a number n which added to its sum of digits gives 2151864350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151864353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21518594 + ... + 21518693.

It is an arithmetic number, because the mean of its divisors is an integer number (333538982).

Almost surely, 2^2151864350 is an apocalyptic number.

2151864350 is a deficient number, since it is larger than the sum of its proper divisors (1850603434).

2151864350 is a wasteful number, since it uses less digits than its factorization.

2151864350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43037299 (or 43037294 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 2151864350 is about 46388.1919242387. The cubic root of 2151864350 is about 1291.0358344971.

The spelling of 2151864350 in words is "two billion, one hundred fifty-one million, eight hundred sixty-four thousand, three hundred fifty".