1964391041 has 4 divisors (see below), whose sum is σ = 1964615172. Its totient is φ = 1964166912.

The previous prime is 1964391031. The next prime is 1964391049. The reversal of 1964391041 is 1401934691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19228225 + 1945162816 = 4385^2 + 44104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964391041 - 2⁶ = 1964390977 is a prime.

It is a super-2 number, since 2×1964391041² = 7717664323922127362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1964390986 and 1964391004.

It is not an unprimeable number, because it can be changed into a prime (1964391049) 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, 98360 + ... + 116633.

It is an arithmetic number, because the mean of its divisors is an integer number (491153793).

Almost surely, 2^1964391041 is an apocalyptic number.

It is an amenable number.

1964391041 is a deficient number, since it is larger than the sum of its proper divisors (224131).

1964391041 is an equidigital number, since it uses as much as digits as its factorization.

1964391041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224130.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1964391041 is about 44321.4512510590. The cubic root of 1964391041 is about 1252.3988156819.

The spelling of 1964391041 in words is "one billion, nine hundred sixty-four million, three hundred ninety-one thousand, forty-one".