19874349 has 32 divisors (see below), whose sum is σ = 32676480. Its totient is φ = 11836800.

The previous prime is 19874339. The next prime is 19874383. The reversal of 19874349 is 94347891.

It is not a de Polignac number, because 19874349 - 2⁴ = 19874333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19874339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17569 + ... + 18665.

It is an arithmetic number, because the mean of its divisors is an integer number (1021140).

Almost surely, 2^19874349 is an apocalyptic number.

It is an amenable number.

19874349 is a deficient number, since it is larger than the sum of its proper divisors (12802131).

19874349 is a wasteful number, since it uses less digits than its factorization.

19874349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1172 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19874349 is about 4458.0656118994. The cubic root of 19874349 is about 270.8721182378.

It can be divided in two parts, 1987 and 4349, that added together give a palindrome (6336).

The spelling of 19874349 in words is "nineteen million, eight hundred seventy-four thousand, three hundred forty-nine".