1538913 has 8 divisors (see below), whose sum is σ = 2080288. Its totient is φ = 1011744.

The previous prime is 1538909. The next prime is 1538917. The reversal of 1538913 is 3198351.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1538909) and next prime (1538917).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1538913 - 2² = 1538909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1538917) 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 7 ways as a sum of consecutive naturals, for example, 3295 + ... + 3732.

It is an arithmetic number, because the mean of its divisors is an integer number (260036).

2^1538913 is an apocalyptic number.

It is an amenable number.

1538913 is a deficient number, since it is larger than the sum of its proper divisors (541375).

1538913 is an equidigital number, since it uses as much as digits as its factorization.

1538913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7103.

The product of its digits is 3240, while the sum is 30.

The square root of 1538913 is about 1240.5293225071. The cubic root of 1538913 is about 115.4528583314.

The spelling of 1538913 in words is "one million, five hundred thirty-eight thousand, nine hundred thirteen".