Base | Representation |
---|---|
bin | 110010011000110… |
… | …1001110111101011 |
3 | 11100211102101201200 |
4 | 1210301221313223 |
5 | 11430312110110 |
6 | 435434215243 |
7 | 56620015521 |
oct | 14461516753 |
9 | 4324371650 |
10 | 1690738155 |
11 | 798417667 |
12 | 3b2284523 |
13 | 20c3859a2 |
14 | 120794311 |
15 | 9d6746c0 |
hex | 64c69deb |
1690738155 has 24 divisors (see below), whose sum is σ = 2932605312. Its totient is φ = 901113984.
The previous prime is 1690738141. The next prime is 1690738157. The reversal of 1690738155 is 5518370961.
It is a happy number.
It is not a de Polignac number, because 1690738155 - 211 = 1690736107 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a self number, because there is not a number n which added to its sum of digits gives 1690738155.
It is not an unprimeable number, because it can be changed into a prime (1690738157) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58527 + ... + 82503.
It is an arithmetic number, because the mean of its divisors is an integer number (122191888).
Almost surely, 21690738155 is an apocalyptic number.
1690738155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
1690738155 is a deficient number, since it is larger than the sum of its proper divisors (1241867157).
1690738155 is a wasteful number, since it uses less digits than its factorization.
1690738155 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 25555 (or 25552 counting only the distinct ones).
The product of its (nonzero) digits is 226800, while the sum is 45.
The square root of 1690738155 is about 41118.5864907830. The cubic root of 1690738155 is about 1191.3118210157.
The spelling of 1690738155 in words is "one billion, six hundred ninety million, seven hundred thirty-eight thousand, one hundred fifty-five".
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