1640130363 has 20 divisors (see below), whose sum is σ = 2490243888. Its totient is φ = 1075492080.

The previous prime is 1640130337. The next prime is 1640130367. The reversal of 1640130363 is 3630310461.

1640130363 is a `hidden beast` number, since 1 + 640 + 13 + 0 + 3 + 6 + 3 = 666.

1640130363 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1640130363 - 2⁹ = 1640129851 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1640130367) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 161031 + ... + 170912.

Almost surely, 2^1640130363 is an apocalyptic number.

1640130363 is a deficient number, since it is larger than the sum of its proper divisors (850113525).

1640130363 is an equidigital number, since it uses as much as digits as its factorization.

1640130363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332016 (or 332007 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 1640130363 is about 40498.5229730666. The cubic root of 1640130363 is about 1179.3049538447.

It can be divided in two parts, 16401 and 30363, that added together give a palindrome (46764).

The spelling of 1640130363 in words is "one billion, six hundred forty million, one hundred thirty thousand, three hundred sixty-three".