1539138 has 16 divisors (see below), whose sum is σ = 3122496. Its totient is φ = 505680.

The previous prime is 1539127. The next prime is 1539149. The reversal of 1539138 is 8319351.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1539127) and next prime (1539149).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381 + ... + 2232.

It is an arithmetic number, because the mean of its divisors is an integer number (195156).

2^1539138 is an apocalyptic number.

1539138 is an abundant number, since it is smaller than the sum of its proper divisors (1583358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1539138 is a wasteful number, since it uses less digits than its factorization.

1539138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689.

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

The square root of 1539138 is about 1240.6200062872. The cubic root of 1539138 is about 115.4584847329.

The spelling of 1539138 in words is "one million, five hundred thirty-nine thousand, one hundred thirty-eight".