19412145 has 12 divisors (see below), whose sum is σ = 33647796. Its totient is φ = 10353120.

The previous prime is 19412143. The next prime is 19412149. The reversal of 19412145 is 54121491.

It can be written as a sum of positive squares in 2 ways, for example, as 4941729 + 14470416 = 2223^2 + 3804^2 .

It is not a de Polignac number, because 19412145 - 2¹ = 19412143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19412143) 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, 215646 + ... + 215735.

It is an arithmetic number, because the mean of its divisors is an integer number (2803983).

Almost surely, 2^19412145 is an apocalyptic number.

19412145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19412145 is a deficient number, since it is larger than the sum of its proper divisors (14235651).

19412145 is a wasteful number, since it uses less digits than its factorization.

19412145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431392 (or 431389 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 19412145 is about 4405.9215835055. The cubic root of 19412145 is about 268.7557979640.

It can be divided in two parts, 19 and 412145, that added together give a square (412164 = 642²).

The spelling of 19412145 in words is "nineteen million, four hundred twelve thousand, one hundred forty-five".