19053945 has 36 divisors (see below), whose sum is σ = 33960420. Its totient is φ = 9882432.

The previous prime is 19053901. The next prime is 19053961. The reversal of 19053945 is 54935091.

It can be written as a sum of positive squares in 2 ways, for example, as 13046544 + 6007401 = 3612^2 + 2451^2 .

It is not a de Polignac number, because 19053945 - 2⁷ = 19053817 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 83091 + ... + 83319.

It is an arithmetic number, because the mean of its divisors is an integer number (943345).

Almost surely, 2^19053945 is an apocalyptic number.

19053945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19053945 is a deficient number, since it is larger than the sum of its proper divisors (14906475).

19053945 is a wasteful number, since it uses less digits than its factorization.

19053945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 19053945 is about 4365.0824734477. The cubic root of 19053945 is about 267.0924647135.

The spelling of 19053945 in words is "nineteen million, fifty-three thousand, nine hundred forty-five".