1640573452 has 12 divisors (see below), whose sum is σ = 3281146960. Its totient is φ = 703102896.

The previous prime is 1640573447. The next prime is 1640573483. The reversal of 1640573452 is 2543750461.

1640573452 is an admirable number.

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, 29295927 + ... + 29295982.

Almost surely, 2^1640573452 is an apocalyptic number.

It is an amenable number.

1640573452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1640573452 is a wasteful number, since it uses less digits than its factorization.

1640573452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58591920 (or 58591918 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 1640573452 is about 40503.9930377241. The cubic root of 1640573452 is about 1179.4111425592.

The spelling of 1640573452 in words is "one billion, six hundred forty million, five hundred seventy-three thousand, four hundred fifty-two".