1964331 has 10 divisors (see below), whose sum is σ = 2934492. Its totient is φ = 1309500.

The previous prime is 1964323. The next prime is 1964363. The reversal of 1964331 is 1334691.

1964331 is a `hidden beast` number, since 19 + 643 + 3 + 1 = 666.

It is not a de Polignac number, because 1964331 - 2³ = 1964323 is a prime.

It is a super-2 number, since 2×1964331² = 7717192555122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

1964331 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1964295 and 1964304.

It is not an unprimeable number, because it can be changed into a prime (1964311) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12045 + ... + 12206.

2^1964331 is an apocalyptic number.

1964331 is a deficient number, since it is larger than the sum of its proper divisors (970161).

1964331 is an equidigital number, since it uses as much as digits as its factorization.

1964331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24263 (or 24254 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1964331 is about 1401.5459321763. The cubic root of 1964331 is about 125.2386055825.

The spelling of 1964331 in words is "one million, nine hundred sixty-four thousand, three hundred thirty-one".