1936139 has 4 divisors (see below), whose sum is σ = 1944480. Its totient is φ = 1927800.

The previous prime is 1936133. The next prime is 1936153. The reversal of 1936139 is 9316391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1936139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1936133) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3812 + ... + 4289.

It is an arithmetic number, because the mean of its divisors is an integer number (486120).

2^1936139 is an apocalyptic number.

1936139 is a deficient number, since it is larger than the sum of its proper divisors (8341).

1936139 is an equidigital number, since it uses as much as digits as its factorization.

1936139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340.

The product of its digits is 4374, while the sum is 32.

The square root of 1936139 is about 1391.4521191906. The cubic root of 1936139 is about 124.6365764104.

The spelling of 1936139 in words is "one million, nine hundred thirty-six thousand, one hundred thirty-nine".