2151249193 has 8 divisors (see below), whose sum is σ = 2202200000. Its totient is φ = 2100340368.

The previous prime is 2151249187. The next prime is 2151249223. The reversal of 2151249193 is 3919421512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2151249193 - 2⁵ = 2151249161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151259193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109108 + ... + 127306.

It is an arithmetic number, because the mean of its divisors is an integer number (275275000).

Almost surely, 2^2151249193 is an apocalyptic number.

It is an amenable number.

2151249193 is a deficient number, since it is larger than the sum of its proper divisors (50950807).

2151249193 is a wasteful number, since it uses less digits than its factorization.

2151249193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20991.

The product of its digits is 19440, while the sum is 37.

The square root of 2151249193 is about 46381.5609159502. The cubic root of 2151249193 is about 1290.9127992600.

The spelling of 2151249193 in words is "two billion, one hundred fifty-one million, two hundred forty-nine thousand, one hundred ninety-three".