19309485 has 16 divisors (see below), whose sum is σ = 33272064. Its totient is φ = 9506112.

The previous prime is 19309481. The next prime is 19309561. The reversal of 19309485 is 58490391.

It is not a de Polignac number, because 19309485 - 2² = 19309481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19309481) 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 15 ways as a sum of consecutive naturals, for example, 49317 + ... + 49706.

It is an arithmetic number, because the mean of its divisors is an integer number (2079504).

Almost surely, 2^19309485 is an apocalyptic number.

19309485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19309485 is a deficient number, since it is larger than the sum of its proper divisors (13962579).

19309485 is a wasteful number, since it uses less digits than its factorization.

19309485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99044.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 19309485 is about 4394.2559097076. The cubic root of 19309485 is about 268.2811938697.

The spelling of 19309485 in words is "nineteen million, three hundred nine thousand, four hundred eighty-five".