1969131 has 4 divisors (see below), whose sum is σ = 2625512. Its totient is φ = 1312752.

The previous prime is 1969111. The next prime is 1969147. The reversal of 1969131 is 1319691.

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

It is not a de Polignac number, because 1969131 - 2¹⁴ = 1952747 is a prime.

It is a super-2 number, since 2×1969131² = 7754953790322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

1969131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1969111) 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 3 ways as a sum of consecutive naturals, for example, 328186 + ... + 328191.

It is an arithmetic number, because the mean of its divisors is an integer number (656378).

2^1969131 is an apocalyptic number.

1969131 is a deficient number, since it is larger than the sum of its proper divisors (656381).

1969131 is an equidigital number, since it uses as much as digits as its factorization.

1969131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656380.

The product of its digits is 1458, while the sum is 30.

The square root of 1969131 is about 1403.2572821831. The cubic root of 1969131 is about 125.3405327903.

The spelling of 1969131 in words is "one million, nine hundred sixty-nine thousand, one hundred thirty-one".