15438195 has 20 divisors (see below), whose sum is σ = 27675120. Its totient is φ = 8233488.

The previous prime is 15438187. The next prime is 15438197. The reversal of 15438195 is 59183451.

It is not a de Polignac number, because 15438195 - 2³ = 15438187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15438197) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18655 + ... + 19464.

It is an arithmetic number, because the mean of its divisors is an integer number (1383756).

Almost surely, 2^15438195 is an apocalyptic number.

15438195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15438195 is a deficient number, since it is larger than the sum of its proper divisors (12236925).

15438195 is an equidigital number, since it uses as much as digits as its factorization.

15438195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38136 (or 38127 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 15438195 is about 3929.1468539621. The cubic root of 15438195 is about 248.9997096818. Note that the first 3 decimals are identical.

The spelling of 15438195 in words is "fifteen million, four hundred thirty-eight thousand, one hundred ninety-five".