19494065 has 8 divisors (see below), whose sum is σ = 23963688. Its totient is φ = 15214720.

The previous prime is 19494047. The next prime is 19494067. The reversal of 19494065 is 56049491.

It can be written as a sum of positive squares in 4 ways, for example, as 1507984 + 17986081 = 1228^2 + 4241^2 .

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

It is not a de Polignac number, because 19494065 - 2⁶ = 19494001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19494067) 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, 47342 + ... + 47751.

It is an arithmetic number, because the mean of its divisors is an integer number (2995461).

Almost surely, 2^19494065 is an apocalyptic number.

It is an amenable number.

19494065 is a deficient number, since it is larger than the sum of its proper divisors (4469623).

19494065 is an equidigital number, since it uses as much as digits as its factorization.

19494065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95139.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 19494065 is about 4415.2083756036. The cubic root of 19494065 is about 269.1333206823.

The spelling of 19494065 in words is "nineteen million, four hundred ninety-four thousand, sixty-five".