19932149 has 4 divisors (see below), whose sum is σ = 20009964. Its totient is φ = 19854336.

The previous prime is 19932131. The next prime is 19932167. The reversal of 19932149 is 94123991.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (19932131) and next prime (19932167).

It can be written as a sum of positive squares in 2 ways, for example, as 12909649 + 7022500 = 3593^2 + 2650^2 .

It is a cyclic number.

It is not a de Polignac number, because 19932149 - 2²⁰ = 18883573 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 (19932119) 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, 38522 + ... + 39035.

It is an arithmetic number, because the mean of its divisors is an integer number (5002491).

Almost surely, 2^19932149 is an apocalyptic number.

It is an amenable number.

19932149 is a deficient number, since it is larger than the sum of its proper divisors (77815).

19932149 is an equidigital number, since it uses as much as digits as its factorization.

19932149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77814.

The product of its digits is 17496, while the sum is 38.

The square root of 19932149 is about 4464.5435376979. The cubic root of 19932149 is about 271.1344539620.

The spelling of 19932149 in words is "nineteen million, nine hundred thirty-two thousand, one hundred forty-nine".