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164372943 = 3731892837
BaseRepresentation
bin10011100110000…
…10000111001111
3102110022000021210
421303002013033
5314034413233
624151025503
74034101260
oct1163020717
9373260253
10164372943
1184869909
124706b293
1328091cc7
1417b8a967
15e66d163
hex9cc21cf

164372943 has 32 divisors (see below), whose sum is σ = 261550080. Its totient is φ = 89844480.

The previous prime is 164372941. The next prime is 164372947. The reversal of 164372943 is 349273461.

164372943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164372943 - 21 = 164372941 is a prime.

It is a super-3 number, since 3×1643729433 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164372941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56521 + ... + 59357.

It is an arithmetic number, because the mean of its divisors is an integer number (8173440).

Almost surely, 2164372943 is an apocalyptic number.

164372943 is a deficient number, since it is larger than the sum of its proper divisors (97177137).

164372943 is a wasteful number, since it uses less digits than its factorization.

164372943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967.

The product of its digits is 108864, while the sum is 39.

The square root of 164372943 is about 12820.8011840134. The cubic root of 164372943 is about 547.7849678918.

The spelling of 164372943 in words is "one hundred sixty-four million, three hundred seventy-two thousand, nine hundred forty-three".

Divisors: 1 3 7 21 31 89 93 217 267 623 651 1869 2759 2837 8277 8511 19313 19859 57939 59577 87947 252493 263841 615629 757479 1767451 1846887 5302353 7827283 23481849 54790981 164372943