161050638 has 16 divisors (see below), whose sum is σ = 368115840. Its totient is φ = 46014456.

The previous prime is 161050633. The next prime is 161050657. The reversal of 161050638 is 836050161.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161050633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1917228 + ... + 1917311.

It is an arithmetic number, because the mean of its divisors is an integer number (23007240).

Almost surely, 2^161050638 is an apocalyptic number.

161050638 is an abundant number, since it is smaller than the sum of its proper divisors (207065202).

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

161050638 is a wasteful number, since it uses less digits than its factorization.

161050638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834551.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 161050638 is about 12690.5728003113. The cubic root of 161050638 is about 544.0692111156.

The spelling of 161050638 in words is "one hundred sixty-one million, fifty thousand, six hundred thirty-eight".