1641625242 has 16 divisors (see below), whose sum is σ = 3307217472. Its totient is φ = 543213920.

The previous prime is 1641625189. The next prime is 1641625261. The reversal of 1641625242 is 2425261461.

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, 997734 + ... + 999377.

It is an arithmetic number, because the mean of its divisors is an integer number (206701092).

Almost surely, 2^1641625242 is an apocalyptic number.

1641625242 is an abundant number, since it is smaller than the sum of its proper divisors (1665592230).

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

1641625242 is a wasteful number, since it uses less digits than its factorization.

1641625242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997253.

The product of its digits is 23040, while the sum is 33.

The square root of 1641625242 is about 40516.9747389906. The cubic root of 1641625242 is about 1179.6631332763.

The spelling of 1641625242 in words is "one billion, six hundred forty-one million, six hundred twenty-five thousand, two hundred forty-two".