1641959320 has 32 divisors (see below), whose sum is σ = 3699879120. Its totient is φ = 655811200.

The previous prime is 1641959311. The next prime is 1641959329. The reversal of 1641959320 is 239591461.

It is an interprime number because it is at equal distance from previous prime (1641959311) and next prime (1641959329).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641959329) 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, 2731 + ... + 57370.

Almost surely, 2^1641959320 is an apocalyptic number.

1641959320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1641959320 is an abundant number, since it is smaller than the sum of its proper divisors (2057919800).

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

1641959320 is a wasteful number, since it uses less digits than its factorization.

1641959320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60795 (or 60791 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 1641959320 is about 40521.0972210773. The cubic root of 1641959320 is about 1179.7431500710.

The spelling of 1641959320 in words is "one billion, six hundred forty-one million, nine hundred fifty-nine thousand, three hundred twenty".