19674949 has 4 divisors (see below), whose sum is σ = 22485664. Its totient is φ = 16864236.

The previous prime is 19674943. The next prime is 19674973. The reversal of 19674949 is 94947691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94947691 = 457 ⋅207763.

It is a cyclic number.

It is not a de Polignac number, because 19674949 - 2⁵ = 19674917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19674943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1405347 + ... + 1405360.

It is an arithmetic number, because the mean of its divisors is an integer number (5621416).

Almost surely, 2^19674949 is an apocalyptic number.

It is an amenable number.

19674949 is a deficient number, since it is larger than the sum of its proper divisors (2810715).

19674949 is an equidigital number, since it uses as much as digits as its factorization.

19674949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810714.

The product of its digits is 489888, while the sum is 49.

The square root of 19674949 is about 4435.6452743654. The cubic root of 19674949 is about 269.9631819938.

The spelling of 19674949 in words is "nineteen million, six hundred seventy-four thousand, nine hundred forty-nine".