19494974 has 8 divisors (see below), whose sum is σ = 29274168. Its totient is φ = 9736920.

The previous prime is 19494949. The next prime is 19495009. The reversal of 19494974 is 47949491.

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

It is a super-2 number, since 2×19494974² = 760108022521352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2732 + ... + 6815.

It is an arithmetic number, because the mean of its divisors is an integer number (3659271).

Almost surely, 2^19494974 is an apocalyptic number.

19494974 is a deficient number, since it is larger than the sum of its proper divisors (9779194).

19494974 is a wasteful number, since it uses less digits than its factorization.

19494974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570.

The product of its digits is 326592, while the sum is 47.

The square root of 19494974 is about 4415.3113140525. The cubic root of 19494974 is about 269.1375038083.

The spelling of 19494974 in words is "nineteen million, four hundred ninety-four thousand, nine hundred seventy-four".