1964986 has 4 divisors (see below), whose sum is σ = 2947482. Its totient is φ = 982492.

The previous prime is 1964983. The next prime is 1964987. The reversal of 1964986 is 6894691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6894691 = 37 ⋅186343.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 101761 = 1365^2 + 319^2 .

It is a super-2 number, since 2×1964986² = 7722339960392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1964981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491245 + ... + 491248.

2^1964986 is an apocalyptic number.

1964986 is a deficient number, since it is larger than the sum of its proper divisors (982496).

1964986 is an equidigital number, since it uses as much as digits as its factorization.

1964986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982495.

The product of its digits is 93312, while the sum is 43.

The square root of 1964986 is about 1401.7795832441. The cubic root of 1964986 is about 125.2525241755.

The spelling of 1964986 in words is "one million, nine hundred sixty-four thousand, nine hundred eighty-six".