1966490343 has 6 divisors (see below), whose sum is σ = 2840486064. Its totient is φ = 1310993556.

The previous prime is 1966490341. The next prime is 1966490347. The reversal of 1966490343 is 3430946691.

It is not a de Polignac number, because 1966490343 - 2¹ = 1966490341 is a prime.

It is a super-2 number, since 2×1966490343² = 7734168538224515298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966490341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109249455 + ... + 109249472.

It is an arithmetic number, because the mean of its divisors is an integer number (473414344).

Almost surely, 2^1966490343 is an apocalyptic number.

1966490343 is a deficient number, since it is larger than the sum of its proper divisors (873995721).

1966490343 is a wasteful number, since it uses less digits than its factorization.

1966490343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218498933 (or 218498930 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 1966490343 is about 44345.1276128505. The cubic root of 1966490343 is about 1252.8447939796.

The spelling of 1966490343 in words is "one billion, nine hundred sixty-six million, four hundred ninety thousand, three hundred forty-three".