1641851652 has 24 divisors (see below), whose sum is σ = 4378271296. Its totient is φ = 469100448.

The previous prime is 1641851647. The next prime is 1641851663. The reversal of 1641851652 is 2561581461.

It is a self number, because there is not a number n which added to its sum of digits gives 1641851652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9772843 + ... + 9773010.

Almost surely, 2^1641851652 is an apocalyptic number.

1641851652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1641851652 is an abundant number, since it is smaller than the sum of its proper divisors (2736419644).

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

1641851652 is a wasteful number, since it uses less digits than its factorization.

1641851652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19545867 (or 19545865 counting only the distinct ones).

The product of its digits is 57600, while the sum is 39.

The square root of 1641851652 is about 40519.7686567927. The cubic root of 1641851652 is about 1179.7173631223.

The spelling of 1641851652 in words is "one billion, six hundred forty-one million, eight hundred fifty-one thousand, six hundred fifty-two".