1640267041 has 8 divisors (see below), whose sum is σ = 1876638080. Its totient is φ = 1404407808.

The previous prime is 1640266973. The next prime is 1640267059. The reversal of 1640267041 is 1407620461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1640267041 - 2¹³ = 1640258849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1640266994 and 1640267012.

It is not an unprimeable number, because it can be changed into a prime (1640267141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121056 + ... + 133921.

It is an arithmetic number, because the mean of its divisors is an integer number (234579760).

Almost surely, 2^1640267041 is an apocalyptic number.

It is an amenable number.

1640267041 is a deficient number, since it is larger than the sum of its proper divisors (236371039).

1640267041 is an equidigital number, since it uses as much as digits as its factorization.

1640267041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255903.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1640267041 is about 40500.2103821696. The cubic root of 1640267041 is about 1179.3377115183.

The spelling of 1640267041 in words is "one billion, six hundred forty million, two hundred sixty-seven thousand, forty-one".