1640911367 has 2 divisors, whose sum is σ = 1640911368. Its totient is φ = 1640911366.

The previous prime is 1640911361. The next prime is 1640911373. The reversal of 1640911367 is 7631190461.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1640911361) and next prime (1640911373).

It is a cyclic number.

It is not a de Polignac number, because 1640911367 - 2⁴ = 1640911351 is a prime.

It is a super-2 number, since 2×1640911367² = 5385180228699617378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1640911367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1640911361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820455683 + 820455684.

It is an arithmetic number, because the mean of its divisors is an integer number (820455684).

Almost surely, 2^1640911367 is an apocalyptic number.

1640911367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640911367 is an equidigital number, since it uses as much as digits as its factorization.

1640911367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1640911367 is about 40508.1642018001. The cubic root of 1640911367 is about 1179.4921128963.

The spelling of 1640911367 in words is "one billion, six hundred forty million, nine hundred eleven thousand, three hundred sixty-seven".