1640130512 has 10 divisors (see below), whose sum is σ = 3177752898. Its totient is φ = 820065248.

The previous prime is 1640130497. The next prime is 1640130517. The reversal of 1640130512 is 2150310461.

It can be written as a sum of positive squares in only one way, i.e., 1168545856 + 471584656 = 34184^2 + 21716^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640130517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51254063 + ... + 51254094.

Almost surely, 2^1640130512 is an apocalyptic number.

It is an amenable number.

1640130512 is a deficient number, since it is larger than the sum of its proper divisors (1537622386).

1640130512 is a wasteful number, since it uses less digits than its factorization.

1640130512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102508165 (or 102508159 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1640130512 is about 40498.5248126398. The cubic root of 1640130512 is about 1179.3049895566.

Adding to 1640130512 its reverse (2150310461), we get a palindrome (3790440973).

The spelling of 1640130512 in words is "one billion, six hundred forty million, one hundred thirty thousand, five hundred twelve".