1640141452 has 12 divisors (see below), whose sum is σ = 2870583520. Its totient is φ = 819974736.

The previous prime is 1640141449. The next prime is 1640141471. The reversal of 1640141452 is 2541410461.

It is a self number, because there is not a number n which added to its sum of digits gives 1640141452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26038 + ... + 62914.

Almost surely, 2^1640141452 is an apocalyptic number.

It is an amenable number.

1640141452 is a deficient number, since it is larger than the sum of its proper divisors (1230442068).

1640141452 is a wasteful number, since it uses less digits than its factorization.

1640141452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48000 (or 47998 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1640141452 is about 40498.6598790627. The cubic root of 1640141452 is about 1179.3076116178.

The spelling of 1640141452 in words is "one billion, six hundred forty million, one hundred forty-one thousand, four hundred fifty-two".