Base | Representation |
---|---|
bin | 110101110000110… |
… | …010001110100001 |
3 | 2022212020101110000 |
4 | 311300302032201 |
5 | 3321401343324 |
6 | 225300330213 |
7 | 31231466322 |
oct | 6560621641 |
9 | 2285211400 |
10 | 901981089 |
11 | 423165819 |
12 | 2120a3969 |
13 | 114b3b329 |
14 | 87b14449 |
15 | 542bd9c9 |
hex | 35c323a1 |
901981089 has 45 divisors (see below), whose sum is σ = 1396344961. Its totient is φ = 580237560.
The previous prime is 901981081. The next prime is 901981103. The reversal of 901981089 is 980189109.
The square root of 901981089 is 30033.
It is a perfect power (a square), and thus also a powerful number.
It is not a de Polignac number, because 901981089 - 23 = 901981081 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (901981081) by changing a digit.
It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 12703924 + ... + 12703994.
Almost surely, 2901981089 is an apocalyptic number.
901981089 is the 30033-rd square number.
901981089 is the 15017-th centered octagonal number.
It is an amenable number.
901981089 is a deficient number, since it is larger than the sum of its proper divisors (494363872).
901981089 is an frugal number, since it uses more digits than its factorization.
901981089 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 248 (or 121 counting only the distinct ones).
The product of its (nonzero) digits is 46656, while the sum is 45.
The cubic root of 901981089 is about 966.1972804131.
Multiplying 901981089 by its product of nonzero digits (46656), we get a square (42082829688384 = 64871282).
The spelling of 901981089 in words is "nine hundred one million, nine hundred eighty-one thousand, eighty-nine".
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