19854130 has 16 divisors (see below), whose sum is σ = 37839960. Its totient is φ = 7474432.

The previous prime is 19854061. The next prime is 19854137. The reversal of 19854130 is 3145891.

It can be written as a sum of positive squares in 4 ways, for example, as 12131289 + 7722841 = 3483^2 + 2779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19854092 and 19854101.

It is not an unprimeable number, because it can be changed into a prime (19854137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58225 + ... + 58564.

Almost surely, 2^19854130 is an apocalyptic number.

19854130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19854130 is a deficient number, since it is larger than the sum of its proper divisors (17985830).

19854130 is a wasteful number, since it uses less digits than its factorization.

19854130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116813.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 19854130 is about 4455.7973472769. The cubic root of 19854130 is about 270.7802305881.

The spelling of 19854130 in words is "nineteen million, eight hundred fifty-four thousand, one hundred thirty".