1641930408 has 96 divisors (see below), whose sum is σ = 4556878560. Its totient is φ = 533934720.

The previous prime is 1641930401. The next prime is 1641930413. The reversal of 1641930408 is 8040391461.

1641930408 is a `hidden beast` number, since 1 + 64 + 193 + 0 + 408 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1641930401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 514578 + ... + 517758.

It is an arithmetic number, because the mean of its divisors is an integer number (47467485).

Almost surely, 2^1641930408 is an apocalyptic number.

1641930408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641930408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2278439280).

1641930408 is an abundant number, since it is smaller than the sum of its proper divisors (2914948152).

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

1641930408 is a wasteful number, since it uses less digits than its factorization.

1641930408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1641930408 is about 40520.7404670744. The cubic root of 1641930408 is about 1179.7362256335.

The spelling of 1641930408 in words is "one billion, six hundred forty-one million, nine hundred thirty thousand, four hundred eight".