189418124493 has 12 divisors (see below), whose sum is σ = 294650416060. Its totient is φ = 116564999616.

The previous prime is 189418124491. The next prime is 189418124501. The reversal of 189418124493 is 394421814981.

189418124493 is a `hidden beast` number, since 1 + 89 + 41 + 81 + 2 + 449 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 60753869289 + 128664255204 = 246483^2 + 358698^2 .

It is not a de Polignac number, because 189418124493 - 2¹ = 189418124491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189418124491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 809479048 + ... + 809479281.

Almost surely, 2^189418124493 is an apocalyptic number.

189418124493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189418124493 is a deficient number, since it is larger than the sum of its proper divisors (105232291567).

189418124493 is a wasteful number, since it uses less digits than its factorization.

189418124493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618958348 (or 1618958345 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The spelling of 189418124493 in words is "one hundred eighty-nine billion, four hundred eighteen million, one hundred twenty-four thousand, four hundred ninety-three".