1969555 has 12 divisors (see below), whose sum is σ = 2749680. Its totient is φ = 1350384.

The previous prime is 1969543. The next prime is 1969567. The reversal of 1969555 is 5559691.

It is an interprime number because it is at equal distance from previous prime (1969543) and next prime (1969567).

It is not a de Polignac number, because 1969555 - 2¹³ = 1961363 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 3775 + ... + 4264.

It is an arithmetic number, because the mean of its divisors is an integer number (229140).

2^1969555 is an apocalyptic number.

1969555 is a deficient number, since it is larger than the sum of its proper divisors (780125).

1969555 is an equidigital number, since it uses as much as digits as its factorization.

1969555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8058 (or 8051 counting only the distinct ones).

The product of its digits is 60750, while the sum is 40.

The square root of 1969555 is about 1403.4083511224. The cubic root of 1969555 is about 125.3495283949.

The spelling of 1969555 in words is "one million, nine hundred sixty-nine thousand, five hundred fifty-five".