201989151 has 48 divisors (see below), whose sum is σ = 374739456. Its totient is φ = 101901888.

The previous prime is 201989131. The next prime is 201989153. The reversal of 201989151 is 151989102.

It is not a de Polignac number, because 201989151 - 2⁵ = 201989119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201989153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13476 + ... + 24198.

It is an arithmetic number, because the mean of its divisors is an integer number (7807072).

Almost surely, 2^201989151 is an apocalyptic number.

201989151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201989151 is a deficient number, since it is larger than the sum of its proper divisors (172750305).

201989151 is a wasteful number, since it uses less digits than its factorization.

201989151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772 (or 10769 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 201989151 is about 14212.2887319390. The cubic root of 201989151 is about 586.7359263459.

The spelling of 201989151 in words is "two hundred one million, nine hundred eighty-nine thousand, one hundred fifty-one".