1641542044 has 12 divisors (see below), whose sum is σ = 2873057544. Its totient is φ = 820668464.

The previous prime is 1641542029. The next prime is 1641542047. The reversal of 1641542044 is 4402451461.

It is a junction number, because it is equal to n+sod(n) for n = 1641541997 and 1641542015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641542047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19014 + ... + 60370.

It is an arithmetic number, because the mean of its divisors is an integer number (239421462).

Almost surely, 2^1641542044 is an apocalyptic number.

It is an amenable number.

1641542044 is a deficient number, since it is larger than the sum of its proper divisors (1231515500).

1641542044 is a wasteful number, since it uses less digits than its factorization.

1641542044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51284 (or 51282 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 1641542044 is about 40515.9480205018. The cubic root of 1641542044 is about 1179.6432043935.

The spelling of 1641542044 in words is "one billion, six hundred forty-one million, five hundred forty-two thousand, forty-four".