201649734 has 48 divisors (see below), whose sum is σ = 513296784. Its totient is φ = 56404800.

The previous prime is 201649709. The next prime is 201649751. The reversal of 201649734 is 437946102.

201649734 is a `hidden beast` number, since 2 + 0 + 1 + 649 + 7 + 3 + 4 = 666.

201649734 is digitally balanced in base 3, 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 23 ways as a sum of consecutive naturals, for example, 36597 + ... + 41744.

It is an arithmetic number, because the mean of its divisors is an integer number (10693683).

Almost surely, 2^201649734 is an apocalyptic number.

201649734 is an abundant number, since it is smaller than the sum of its proper divisors (311647050).

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

201649734 is a wasteful number, since it uses less digits than its factorization.

201649734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78373 (or 78370 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 201649734 is about 14200.3427423425. The cubic root of 201649734 is about 586.4070971343.

The spelling of 201649734 in words is "two hundred one million, six hundred forty-nine thousand, seven hundred thirty-four".