2193140451 has 4 divisors (see below), whose sum is σ = 2924187272. Its totient is φ = 1462093632.

The previous prime is 2193140449. The next prime is 2193140473. The reversal of 2193140451 is 1540413912.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2193140451 - 2¹ = 2193140449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2193140401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365523406 + ... + 365523411.

It is an arithmetic number, because the mean of its divisors is an integer number (731046818).

Almost surely, 2^2193140451 is an apocalyptic number.

2193140451 is a deficient number, since it is larger than the sum of its proper divisors (731046821).

2193140451 is an equidigital number, since it uses as much as digits as its factorization.

2193140451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731046820.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 2193140451 is about 46830.9774721818. The cubic root of 2193140451 is about 1299.2383015231.

The spelling of 2193140451 in words is "two billion, one hundred ninety-three million, one hundred forty thousand, four hundred fifty-one".