19148661 has 24 divisors (see below), whose sum is σ = 32260800. Its totient is φ = 10940328.

The previous prime is 19148653. The next prime is 19148683. The reversal of 19148661 is 16684191.

It is a happy number.

It is not a de Polignac number, because 19148661 - 2³ = 19148653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19148611) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 15 + ... + 6188.

It is an arithmetic number, because the mean of its divisors is an integer number (1344200).

Almost surely, 2^19148661 is an apocalyptic number.

It is an amenable number.

19148661 is a deficient number, since it is larger than the sum of its proper divisors (13112139).

19148661 is an equidigital number, since it uses as much as digits as its factorization.

19148661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6230 (or 6213 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 19148661 is about 4375.9183036250. The cubic root of 19148661 is about 267.5343001989.

The spelling of 19148661 in words is "nineteen million, one hundred forty-eight thousand, six hundred sixty-one".