201641970 has 32 divisors (see below), whose sum is σ = 490072320. Its totient is φ = 53089920.

The previous prime is 201641953. The next prime is 201641983. The reversal of 201641970 is 79146102.

It is a happy number.

201641970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40171 + ... + 44910.

It is an arithmetic number, because the mean of its divisors is an integer number (15314760).

Almost surely, 2^201641970 is an apocalyptic number.

201641970 is an abundant number, since it is smaller than the sum of its proper divisors (288430350).

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

201641970 is a wasteful number, since it uses less digits than its factorization.

201641970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85170.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 201641970 is about 14200.0693660278. The cubic root of 201641970 is about 586.3995710096.

The spelling of 201641970 in words is "two hundred one million, six hundred forty-one thousand, nine hundred seventy".