19245945 has 8 divisors (see below), whose sum is σ = 30793536. Its totient is φ = 10264496.

The previous prime is 19245893. The next prime is 19245973. The reversal of 19245945 is 54954291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19245945 - 2⁹ = 19245433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641517 + ... + 641546.

It is an arithmetic number, because the mean of its divisors is an integer number (3849192).

Almost surely, 2^19245945 is an apocalyptic number.

19245945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19245945 is a deficient number, since it is larger than the sum of its proper divisors (11547591).

19245945 is a wasteful number, since it uses less digits than its factorization.

19245945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283071.

The product of its digits is 64800, while the sum is 39.

The square root of 19245945 is about 4387.0200592202. The cubic root of 19245945 is about 267.9866008375.

The spelling of 19245945 in words is "nineteen million, two hundred forty-five thousand, nine hundred forty-five".