1641934536 has 64 divisors (see below), whose sum is σ = 4521553920. Its totient is φ = 492717120.

The previous prime is 1641934531. The next prime is 1641934537. The reversal of 1641934536 is 6354391461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1641934531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3000 + ... + 57383.

It is an arithmetic number, because the mean of its divisors is an integer number (70649280).

Almost surely, 2^1641934536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1641934536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2260776960).

1641934536 is an abundant number, since it is smaller than the sum of its proper divisors (2879619384).

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

1641934536 is a wasteful number, since it uses less digits than its factorization.

1641934536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60506 (or 60502 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 1641934536 is about 40520.7914039200. The cubic root of 1641934536 is about 1179.7372142964.

The spelling of 1641934536 in words is "one billion, six hundred forty-one million, nine hundred thirty-four thousand, five hundred thirty-six".