201981070 has 16 divisors (see below), whose sum is σ = 363741840. Its totient is φ = 80753344.

The previous prime is 201981067. The next prime is 201981083. The reversal of 201981070 is 70189102.

201981070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 26289 + ... + 33091.

It is an arithmetic number, because the mean of its divisors is an integer number (22733865).

Almost surely, 2^201981070 is an apocalyptic number.

201981070 is a deficient number, since it is larger than the sum of its proper divisors (161760770).

201981070 is a wasteful number, since it uses less digits than its factorization.

201981070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 201981070 is about 14212.0044328729. The cubic root of 201981070 is about 586.7281017074.

The spelling of 201981070 in words is "two hundred one million, nine hundred eighty-one thousand, seventy".