1640133371 has 8 divisors (see below), whose sum is σ = 1727362320. Its totient is φ = 1552995072.

The previous prime is 1640133359. The next prime is 1640133377. The reversal of 1640133371 is 1733310461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1640133371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1640133377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16211 + ... + 59523.

It is an arithmetic number, because the mean of its divisors is an integer number (215920290).

Almost surely, 2^1640133371 is an apocalyptic number.

1640133371 is a deficient number, since it is larger than the sum of its proper divisors (87228949).

1640133371 is a wasteful number, since it uses less digits than its factorization.

1640133371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45325.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 1640133371 is about 40498.5601102064. The cubic root of 1640133371 is about 1179.3056747929.

The spelling of 1640133371 in words is "one billion, six hundred forty million, one hundred thirty-three thousand, three hundred seventy-one".