18295225919 has 16 divisors (see below), whose sum is σ = 18558194688. Its totient is φ = 18034555392.

The previous prime is 18295225889. The next prime is 18295225931. The reversal of 18295225919 is 91952259281.

It is a cyclic number.

It is not a de Polignac number, because 18295225919 - 2¹⁶ = 18295160383 is a prime.

It is a super-2 number, since 2×18295225919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18295225219) 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, 20860709 + ... + 20861585.

It is an arithmetic number, because the mean of its divisors is an integer number (1159887168).

Almost surely, 2^18295225919 is an apocalyptic number.

18295225919 is a deficient number, since it is larger than the sum of its proper divisors (262968769).

18295225919 is a wasteful number, since it uses less digits than its factorization.

18295225919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its digits is 1166400, while the sum is 53.

The spelling of 18295225919 in words is "eighteen billion, two hundred ninety-five million, two hundred twenty-five thousand, nine hundred nineteen".