1964973 has 4 divisors (see below), whose sum is σ = 2619968. Its totient is φ = 1309980.

The previous prime is 1964969. The next prime is 1964981. The reversal of 1964973 is 3794691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3794691 = 3 ⋅1264897.

It is not a de Polignac number, because 1964973 - 2² = 1964969 is a prime.

It is a super-2 number, since 2×1964973² = 7722237781458, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327493 + ... + 327498.

It is an arithmetic number, because the mean of its divisors is an integer number (654992).

2^1964973 is an apocalyptic number.

It is an amenable number.

1964973 is a deficient number, since it is larger than the sum of its proper divisors (654995).

1964973 is an equidigital number, since it uses as much as digits as its factorization.

1964973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654994.

The product of its digits is 40824, while the sum is 39.

The square root of 1964973 is about 1401.7749462735. The cubic root of 1964973 is about 125.2522479587.

The spelling of 1964973 in words is "one million, nine hundred sixty-four thousand, nine hundred seventy-three".