1964531 has 2 divisors, whose sum is σ = 1964532. Its totient is φ = 1964530.

The previous prime is 1964483. The next prime is 1964549. The reversal of 1964531 is 1354691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1964531 - 2¹⁴ = 1948147 is a prime.

It is a super-2 number, since 2×1964531² = 7718764099922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1964494 and 1964503.

It is not a weakly prime, because it can be changed into another prime (1964561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982265 + 982266.

It is an arithmetic number, because the mean of its divisors is an integer number (982266).

2^1964531 is an apocalyptic number.

1964531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964531 is an equidigital number, since it uses as much as digits as its factorization.

1964531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 1964531 is about 1401.6172801446. The cubic root of 1964531 is about 125.2428558627.

The spelling of 1964531 in words is "one million, nine hundred sixty-four thousand, five hundred thirty-one".