19974195 has 40 divisors (see below), whose sum is σ = 36154800. Its totient is φ = 10549440.

The previous prime is 19974169. The next prime is 19974197. The reversal of 19974195 is 59147991.

It is not a de Polignac number, because 19974195 - 2⁸ = 19973939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 19974195.

It is not an unprimeable number, because it can be changed into a prime (19974197) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60180 + ... + 60510.

It is an arithmetic number, because the mean of its divisors is an integer number (903870).

Almost surely, 2^19974195 is an apocalyptic number.

19974195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19974195 is the 2235-th decagonal number.

19974195 is a deficient number, since it is larger than the sum of its proper divisors (16180605).

19974195 is a wasteful number, since it uses less digits than its factorization.

19974195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 488 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 19974195 is about 4469.2499370700. The cubic root of 19974195 is about 271.3249688368.

The spelling of 19974195 in words is "nineteen million, nine hundred seventy-four thousand, one hundred ninety-five".